Japan

A non-nuclear-weapon party and rule-taker: Japan accepted the NPT's bargain that it may not hold weapons and lives under the regime's constraints despite a large civil-nuclear base. It is shaped by the who-may-hold rule rather than authoring it.

How the field was judged across the 12NPT rule-authorship: US/UK/Russia are the 3 depositary governments AND original NWS → top tier (US 95 as primary depositary/architect, UK/Russia 90); France/China are NWS rule-authors but acceded late (1992) → 70; non-NWS parties are rule-takers bound by the regime → 20-25 (Germany/Japan/Italy/Canada 25; Brazil late accession 1998 and South Africa uniquely disarmed before acceding → 20); India is an NPT non-party that rejected the regime entirely → rejecter/outsider, not a rule-taker: outside the framework, neither authoring nor bound by it → 10.

A non-weapons state but structurally advantaged on safeguards: Japan's large, advanced civil-nuclear base qualifies it under the Art VI designation of the most atomic-advanced, conferring permanent-class Board influence over the IAEA inspection lever rather than mere subjection to it.

How the field was judged across the 12Control of the IAEA safeguards/inspection lever via the Art VI designation rule (the 10 'most advanced in atomic-energy technology' get permanent Board influence). The 8 structurally-advantaged of our 12 are US/Russia/China/France/UK/Germany/Japan/Canada → US 90 (regime leader/largest civil+military nuclear base), Russia/China 70, France/UK 65, Germany/Japan 50, Canada 45 (major uranium/civil-nuclear but smaller weight); Italy/India sit only via rotating elected seats → 20; Brazil/South Africa peripheral inspection subjects → 15.

An NPT party but a non-participant in the bilateral strategic-arms regime: as a non-nuclear-weapon state Japan lobbies for disarmament yet sits outside the US-Russia treaty track and cannot set or block its terms. Minimal hand on the order of restraint, now in a void after New START's lapse.

How the field was judged across the 12New START EXPIRED 2026-02-05 (before the cutoff) → strategic-arms regime is a VOID at the edition date, so agenda power is suppressed across the board (no holder scores high — there is no live regime to set terms of). Residual agenda power = who shapes the contested successor: US sets the terms (demands a China-inclusive treaty) → 60; China holds blocking power by refusing to join → 50; Russia was co-principal but offered voluntary adherence and was rebuffed → 45; France/UK are NWS voices in multilateral fora but outside the bilateral regime → 20; non-NWS states are NPT parties but non-participants in the bilateral strategic-arms regime, so they shape no terms → 5-10.

A recipient, not a provider: Japan is protected by the 1960 US bilateral security treaty and offers no extended-deterrence guarantee to anyone. It is the archetypal consumer of the American umbrella in the Pacific, so it scores at the protected floor.

How the field was judged across the 12Who FORMALLY protects others. US is the principal provider (NATO Art 5 anchor + Japan/Korea/Philippines bilateral + hemispheric Rio umbrella) → 95; France/UK are NATO Art-5 co-guarantors AND independent nuclear-umbrella providers but minor own-deterrents relative to the US → 35; Russia is a rival provider via CSTO (beneficiaries outside our 12) → 20; Germany/Italy/Canada/Japan are recipients/consumers of the umbrella, not providers → 5; China/India/Brazil/South Africa extend no formal extended-deterrence guarantee → 5.

A terms-taker, and the only one of these hosts sheltered under a bilateral pact rather than NATO: protection flows from the 1960 US-Japan security treaty, not Article 5, which makes Japan a single-patron spoke with no co-guarantor role and no leverage over the alliance's terms. The price it pays is concentrated in the Okinawa basing footprint the CRS basing source names for Japan, plus host-nation cost-sharing — terms set by the protector, accepted by Japan. It extracts nothing from others and authors none of the arrangement, sitting squarely on the paying side, so it scores at the floor.

How the field was judged across the 12Who EXTRACTS terms (basing, burden-sharing, alignment) in exchange for protection. US is the net provider of terms — converts protection into forward basing in Germany/Italy/Japan/UK + cost-sharing → 95; UK is the closest peer-ally and terms-sharer with its own modest external posture → 30; France runs an independent posture but extracts little from others → 15; Russia extracts basing terms within CSTO (outside our 12) → 15; Germany/Italy/Japan are terms-takers hosting US presence → 5; the rest extract nothing → 5.

A spoke, not a hub: Japan is a critical Pacific bilateral partner but sits at the end of a US-anchored spoke rather than anchoring the network itself. As a served node, it scores at the spoke level.

How the field was judged across the 12Network centrality as provider, not summed allied force. US is the indispensable hub — SACEUR is always a US officer; anchors NATO integrated command, NORAD, and the Pacific bilateral spokes → 95; UK is a central junior hub (deep US integration, nuclear cooperation) → 35; France is semi-peripheral (left/rejoined integrated command, independent posture) → 25; Russia/China are hubs of RIVAL networks (not the Western provision network) → 25/20; Germany/Italy/Canada/Japan are spokes not hubs → 10; India/Brazil/South Africa non-aligned/peripheral → 5.

No chokepoint command. Japan is the most exposed of the large economies — its energy lifeline runs through Hormuz and Malacca — yet it neither commands nor polices those straits, depending wholly on the US-provided regime for passage. A rule-taker reliant on another's protection.

How the field was judged across the 12Command of the straits others must transit. US is the only one of the 12 with standing naval command across multiple chokepoints (5th Fleet/Bahrain over Hormuz+Bab-el-Mandeb; 7th Fleet over the Malacca approaches) → 90; China is the sole contender, building blue-water reach but commands no strait yet → 35; UK has residual presence (Diego Garcia, Gulf), junior to US → 20; France has residual presence (Djibouti, Indo-Pacific territories) → 15; India regional Indian-Ocean presence → 10; others have no chokepoint command → 5.

An active participant in the US-led Combined Maritime Forces, Japan supplies escort and patrol effort to the multinational policing of key sea lanes. But provision is real and constrained: it operates inside an American-commanded structure — contributing forces to task groups others lead — rather than authoring route security or commanding the forces that deliver it. Japan is a contributor to the protection, not a provider of it on its own terms.

How the field was judged across the 12Who polices the sea-lanes others depend on (provision, not tonnage). US leads and commands the 47-nation Combined Maritime Forces (HQ Bahrain, US officer commands, 5 task forces over ~3.2m sq mi) → 90; China provides outside the US structure via its own independent Gulf of Aden escort task force → 30; UK/France are leading allied CMF contributors with own deployable reach → 25; India contributes and runs independent IOR patrols → 20; Japan/Italy active CMF participants → 15; Canada/Germany participate → 10; Brazil nominal participant, Russia/South Africa absent → 5.

A top-tier author of maritime rules. Japan holds an IMO Council Category A seat as a state with the largest shipping interest, placing it in the highest rule-setting tier — it helps write the regime transport must conform to even where it cannot police or command the lanes.

How the field was judged across the 12IMO Council seats set the maritime ground rules, tiered by category. Category A (largest shipping interest) — China/Italy/Japan/UK/US → top rule-setting tier 80; Category B (largest seaborne trade) — Brazil/Canada/France/Germany/India → 55; Category C (geographic representation) — South Africa → 35; Russia was voted OFF the Council after 2022 (structural exclusion) → 5.

A founding author of the Budapest Convention, one of the few non-European states inside the drafting circle. Japan helped write the cybercrime rules others now adopt, placing it among the authors of the dominant digital-domain regime rather than its adopters — structural rule-setting in Strange's sense, not mere capability.

How the field was judged across the 12Who writes the rules of the digital domain (Budapest Convention/CETS-185 vs the rival UN Cybercrime Convention). US/Canada/Japan are founding authors of the dominant Budapest regime → US 90 (lead author), Canada/Japan 70; Russia is principal driver of the rival UN framework (a competing authorship venue) → 65, China co-driver → 60; France/Germany/Italy/UK are Budapest parties = rule-adopters, not authors → 35; Brazil acceded to Budapest but also works the UN process → 30; India is a Budapest non-party that leans toward the UN process without committing → 12; South Africa signed-not-ratified Budapest and merely leans to the UN framework → 8 (the floor: neither authors nor cleanly adopts, below all clean adopters).

A regional provider. The score_basis places Japan as a regionally-bounded supplier of cyber-defence others lean on rather than a system-wide anchor like the US or UK. Its distinct position is Indo-Pacific: Japan runs the regional CERT-coordination role through JPCERT/CC's APCERT secretariat and bilateral cyber-defence cooperation with neighbours, supplying protective capacity inside its own region rather than across the whole alliance system. It provides shelter to others, but on a regional footing, which is why it sits at the provider tier without reaching the top-rank scale.

How the field was judged across the 12Who supplies cyber-defence others depend on. US is the primary provider — NATO cyber-defence-pledge anchor, CISA standards exported, allied CERT support → 90; UK provides via NCSC + Five Eyes sharing → 50; France provides via ANSSI + EU framework → 40; Germany provides within EU/NATO → 35; China provides an alternative model (surveillance-stack exports) to its sphere → 35; Japan regional provider and Canada Five Eyes provider → 30; Russia provides an alternative model to its sphere → 25; Italy is a framework participant → 20; India/Brazil/South Africa are recipients/non-providers → 10.

Japan provides indispensable materials inputs — photoresists, high-purity silicon wafers — that downstream fabs cannot substitute, a genuine method-chokepoint rather than mere output. Its score reflects real but narrower input control than China's refining hold, concentrated in a few materials classes.

How the field was judged across the 12China high on rare-earth refining chokehold; US high on tooling/inputs upstream; Japan on materials (photoresist, silicon wafers); Russia/Brazil/SA on raw-mineral inputs but NOT refining. Leading-edge foundry/litho chokepoints sit with TW/KR/NL (outside set), depressing all 12's absolute scores here.

Japan is the second strongest process-gatekeeper: Tokyo Electron's WFE position plus Shin-Etsu/JSR precursor chemistry and resists give it control of indispensable process steps others cannot replicate. Its score reflects genuine provision power over specific tooling and chemistry the frontier depends on.

How the field was judged across the 12US overwhelming via EDA (>85%) + WFE leadership. Japan strong (Tokyo Electron WFE, JSR/Shin-Etsu precursor chemistry & resists). China near-zero at leading-edge process despite SMIC volume.

Japan has joined US-aligned WFE export controls, co-exercising denial over advanced fabrication equipment rather than authoring it alone. Its score reflects active participation in an exclusion regime — denial power exercised in coordination, well above the EU members.

How the field was judged across the 12US + China are the two actors who actually wield production-input denial at scale (semiconductors / rare earths respectively). Japan joined US-aligned WFE controls. EU members get a modest shared EU-regime-participant credit (D16: lever is national, not bloc — euro-style full-bloc attribution does NOT apply).

Japan co-authors the process-chemistry and equipment methods others must use, through Tokyo Electron, Shin-Etsu, and JSR, making it the second strongest method-setter in the set. Its score reflects genuine authorship of specific production methods, narrower than the US's but real.

How the field was judged across the 12US authors the dominant production methods (EDA Big-3 >85% share + 95% lock-in, design-rule/WFE method via Synopsys/AMAT; SIA: US firms 50.4% of global design/sales). Japan co-authors process-chemistry/equipment methods (Tokyo Electron, Shin-Etsu, JSR). Germany niche method-supplier (Trumpf EUV source, Zeiss optics); UK retains Arm ISA design-method authorship in its R&D base; France (Soitec SOI), Italy (ST niche). China authors only domestically enforced GB standards with limited frontier adoption; rest negligible.

Japanese lead firms govern through the keiretsu and Toyota-style supplier-network discipline, dictating tiered suppliers' methods, quality, and just-in-time delivery terms — a deep, exercised governance over how and where suppliers produce that ranks Japan second only to the US.

How the field was judged across the 12US dominant lead-firm governance (outward FDI + brand/platform lead firms). Japan/Germany strong (Toyota/VW supplier-network governance). China rising lead-firm power but more state-directed. Russia/Brazil/SA low — chain participants, not governors.

Japan controls materials nodes others depend on, giving it meaningful but more narrowly-bounded denial power over specific chain points rather than the broad chokepoint reach of the US — a real but materials-end leverage.

How the field was judged across the 12Mirrors input-control chokepoint distribution (US tooling/design nodes; China refining/rare-earth nodes; Japan materials nodes; Russia/Brazil/SA raw-input nodes only).

Japan co-authors supplier-governance rules through keiretsu and Toyota-production-system disciplines plus JIS standards that suppliers in its networks must meet, a real authorship role concentrated in its own industrial ecosystem.

How the field was judged across the 12US authors the dominant private chain standards (Apple/Walmart supplier codes, UL, platform/retail rules others must meet to supply). Germany co-authors automotive supplier standards (VDA, IATF) + EU CE/REACH enforced down-chain; Japan co-authors keiretsu/TPS supplier-governance + JIS. France (GlobalGAP), UK (BRCGS), Italy (luxury district governance) niche. China domestic-plus (BYD/CATL sourcing, GB, growing BRI reach). India/Russia/Canada/Brazil/SA chain participants adopting others' standards.

Japan imposes meaningful adjustment through its lead-firm position, making suppliers absorb volatility in its networks, but as a high-trade interdependent economy it also eats real adjustment itself, netting to a strong-but-not-dominant score.

How the field was judged across the 12US imposes adjustment (demand-side leverage + lead-firm position + low input dependence for governance reasons). Eurozone members eat more adjustment (high FVA, interdependent). Russia low-FVA but as isolation, scored down on the governance reading.

At 80 Japan is near the top because its firms relocate production outward far more than they absorb inbound plant — they site production abroad while taking on little foreign production at home. That asymmetry is the relocation lever made structural: Japanese management authors where production goes, and the exit option over labour is permanently live.

How the field was judged across the 12Outward stock magnitude + lead-firm relocation capacity. Japan very high (9x out/in ratio = relocates abroad, little inbound). China large stock but more recent/state-directed.

As a net-controller economy with major globe-spanning firms, Japan extracts favourable terms from host governments, earning 75. Japanese multinationals bargain from strength in the territories where they site production, sitting in the high net-controller tier just below the US.

How the field was judged across the 12US dominant (largest firms + treaty-network authorship). Net-controller economies (JP/DE/FR/CA) score high; net-host economies (BR/IN) low. China's bargaining is state-mediated, mid.

Japan's automotive and electronics multinationals run extensive intra-firm production networks across Asia, putting it at 75. Japanese firms author how production is organized across frontiers within their sectors, a strong mirror of their outward-control position.

How the field was judged across the 12US organizes the largest cross-border intra-firm mode (Apple/auto/pharma networks). Mirrors outward-stock control distribution.

Japan controls a large stock of foreign production through its globe-spanning manufacturers, earning 75. Its firms govern plant sited in others' territory across Asia and the West, a strong outward-control position consistent with its net-relocator profile.

How the field was judged across the 12Pure outward-stock magnitude (% of world stock). US dominant; China rising; advanced economies high; BR/IN/RU/ZA low.

Japan exercises agenda power as the custodian of CPTPP, stewarding a live high-standard rulebook and using that platform to shape multilateral terms beyond its own market size. That stewardship role gives it genuine, mid-tier authorship of the terms others negotiate within.

How the field was judged across the 12US authors and blocks multilateral terms (Appellate Body block 2019-, drives plurilaterals). EU is WTO chief negotiator under exclusive competence — DE/FR/IT split by EU Council population share (DE .396/FR .324/IT .279) per D24: authorship is divisible, keyed to the double-majority QMV population threshold; was full-bloc D19. Japan CPTPP custodian; China rising rule-shaper via accession/plurilateral leverage; India defensive blocker (agric/development); UK post-Brexit independent mid voice; Canada coalition-builder (Ottawa Group); Russia/Brazil/SA coalition participants with limited individual authorship.

Japan is the steward of the CPTPP template — the surviving high-standard model after US withdrawal — and that custodianship makes its agreement architecture one others reference and join. Owning the live high-bar template gives Japan strong template authorship, above the larger but less template-defining players.

How the field was judged across the 12US authors the high-standard template others benchmark (NAFTA/USMCA + TPP: IP, labour, ISDS, digital). EU DCFTA/Association-Agreement + Brussels-effect regulatory templates diffuse globally — DE/FR/IT split by EU Council population share (DE .396/FR .324/IT .279) per D24; was full-bloc D19. Japan CPTPP template steward; China rising template via RCEP/BRI; UK rolls over EU templates + CPTPP (adopter-plus); Canada co-shapes via CPTPP/CETA as partner; India/Russia/Brazil/SA largely adopt others' templates.

Japan has a sizeable import market that confers moderate denial leverage, but it exercises that lever far less coercively than the dominant deniers and lacks their scale of market gravity. Its denial capability is genuine but mid-tier.

How the field was judged across the 12Denial = leverage of a large import market others need access to. US dominant (Section 301/232, tariff weaponization). EU large single market (DE/FR/IT = full EU denial value, D19). China large + uses access as leverage. Small/developing markets cannot deny.

Japan sets meaningful surplus-capture terms where its firms hold pricing and design margin, giving it real authorship over who retains value rather than a merely large realized take. It is below the US because that term-setting is partial rather than structure-wide, placing it just above the EU brand/standards band.

How the field was judged across the 12US sets surplus-capture terms (IP rents, platform economics, design margin). EU brand/standards rents (DE/FR/IT). China captures volume but sets fewer terms (margin-taker at frontier). Commodity economies low — rent ≠ terms-authorship.

Japan can transmit some adjustment cost through its creditor position and currency weight, but it is more often an adjuster within arrangements others set than an imposer of burden on the structure. The mid score reflects influence without the imposition machinery of the dollar-IMF core.

How the field was judged across the 12US dominant (IMF veto + dollar system forces others to adjust). EU bloc imposes via conditionality (DE/FR/IT). China rising via bilateral creditor leverage. Adjustment-BEARERS (IN/BR/ZA) score low.

Japan shapes relative prices where its demand and supply concentration set reference points, conferring partial terms-of-trade authorship below the US and China demand-scale tier the basis identifies as the price-regime shapers. The mid score reflects bounded price-shaping rather than structure-wide regime-setting.

How the field was judged across the 12Price-regime SHAPERS score high (US/China large demand sets benchmarks; USD invoicing). Commodity price-TAKERS (RU/BR/ZA) low despite high ToT index — outcome not authorship (the metric's whole point).

Japan's JGB curve anchors one of the world's deepest domestic bond markets, giving its sovereign yields a slightly wider reference function than China's onshore curve and earning a narrow edge (14). But the world does not discount global credit against Japanese yields; with a sub-1% international debt share, the JGB curve's price-setting reach stops largely at Japan's own paper, well short of a global benchmark role.

How the field was judged across the 12US 95 — the UST curve is THE global benchmark others price credit off, USD 45.7% of international debt issuance; no rival on price-setting reach. Euro nations (DE/FR/IT) 48 — the euro risk-free curve (Bund) anchors EUR 40.3% of cross-border debt, the clear #2 benchmark, scored full-bloc per D19 (the curve is the union's, set collectively). UK 28 — gilt curve + GBP 7.5% of international debt, a real third anchor via London. Japan 14, Canada 10, China 10 — domestic curves, sub-1% international debt shares, little price-setting reach beyond their own paper. India/Russia/Brazil/South Africa 3-4 — no global benchmark role.

The BoJ is inside the standing C6 central-bank swap network and provides the yen-liquidity backstop to that network, a genuine if currency-bounded LOLR provision (28). It backstops yen funding for others but operates within, not above, the dollar system.

How the field was judged across the 12US 95 — the Fed is the world's dollar lender of last resort; its swap lines backstopped the entire global banking system in 2008 and 2020, the decisive Mexico-vs-Poland capacity Strange identifies. Euro nations (DE/FR/IT) 42 — the ECB is inside the C6 AND independently provides euro-liquidity backstop to others; scored full-bloc per D19 (one central bank, pooled). UK 35 — BoE in the C6 and extends sterling swaps. Japan 28, Canada 25 — BoJ/BoC inside the standing network, provide their currency's backstop. China 18 — extensive PBoC bilateral RMB swap network, but RMB is not a crisis-grade backstop and China is outside the dollar network. India/Russia/Brazil/South Africa 3-4 — no Fed line, no meaningful outward LOLR provision.

Japan is a full Basel/FSB member and home-supervises 3 G-SIBs, giving it real standing in the rulebook's governance (45) — a genuine co-participant in the prudential bargain, ranking just below the euro core but above the BRICS members on authorship and systemic-bank supervision.

How the field was judged across the 12Scored on two provision levers: authorship of the Basel/FSB rulebook the world's banks adopt, plus home-supervisor status of the 29 G-SIBs. US 90 — leads Basel/FSB AND home-supervises 8 G-SIBs, the most of any state; the dominant but not exclusive rule-author. UK 70 — Basel/FSB co-author, the global bank hub, 3 G-SIBs (punches above its bank count on rule-authorship). France 60 / Germany 55 — euro Basel seats; France home to 4 G-SIBs, Germany 1, both carry euro-bloc rule weight. Japan 45, Canada 40, Italy 40 — Basel/FSB members with 3/2/1 G-SIBs respectively. China 35 — 4 G-SIBs and a Basel/FSB seat, but a rule-taker more than rule-author on the global prudential bargain. India 12, Brazil 10, South Africa 8, Russia 6 — at the FSB table nominally but no G-SIBs and negligible authorship of the global rulebook (Russia further isolated).

The yen handles roughly 3.5% of international payments and ranks #5 in FX, a credible but secondary settlement currency. Japan provides a usable unit at the margins of world trade without compelling others to invoice in it, so its 22 sits in taker-adjacent territory: a participant in the denomination order rather than its author.

How the field was judged across the 12US 95 — USD 50.5% of intl payments and 80.7% of trade finance, the #1 settlement currency by a wide margin (the denomination rail). Euro nations (DE/FR/IT) 45 — euro 21.3% of payments / #2 in FX and trade finance, full-bloc per D19. UK 40 — GBP 6.5% payments + #3 FX spot + London intermediation. Japan 22 — JPY 3.5% payments, #5 FX. Canada 25 — CAD 3.0% payments, #6 FX (punches above size as a commodity/G7 currency). China 18 — CNY 3.1% payments but rising and #2 in trade finance (8.0%), a real but still-minor settlement role concentrated in its own trade. India/Brazil/Russia/South Africa 4-6 — currencies barely used for cross-border settlement.

The yen holds a low single-digit share of cross-border debt and prices no major commodity, so Japan neither authors the debt-denomination rail nor the pricing convention. Its 8-10 band marks a secondary provider whose currency funds some international issuance but compels nothing — well short of structural grip.

How the field was judged across the 12US 95 — USD 45.7% of international debt issuance AND the commodity-pricing currency (oil, metals), the dual lock the metric is built around. Euro nations 50 — euro 40.3% of cross-border debt (nearly matching USD on the debt face), full-bloc per D19; but the euro does not price commodities, so it trails USD on the combined construct. UK 30 — GBP 7.5% of debt, a real third currency. Japan/Canada 8-10, China 8 — sub-1% debt shares; commodities not priced in their currencies. India/Brazil/Russia/South Africa 3-4 — negligible debt-denomination and no commodity-pricing role.

At roughly 6% voting weight Japan sits well below the blocking threshold, so it has no veto over institutional reform. Its score reflects relational board sway — the ability to bargain inside a framework it cannot author or block — not structural control.

How the field was judged across the 12US 95 — sole holder of the blocking veto in both the IMF and the IBRD (the only member above the 15% threshold); structurally it alone can veto reform. All others are sub-threshold → relational influence only, scored on voting weight as a proxy for board sway: Japan/China ~6% → 18, the larger Europeans 13-16, down to South Africa 0.63% → 3. The gap from US to next is the structural fact.

Japan carries a meaningful G7 board voice that shapes programme design at the margins, but it does not supply the institutions' leadership or author the conditionality template. It is a senior co-shaper inside the transatlantic-led management, not a principal directing the agent.

How the field was judged across the 12US 90 — sets the template for conditionality and holds the World Bank presidency by convention. France/UK/Germany 55-60 — the European bloc supplies the IMF Managing Director by convention and co-authors programme design (the transatlantic management duopoly). Japan 30, Canada 25 — meaningful G7 board voice. China 22 — large quota but a programme TAKER, building rival institutions (AIIB) outside this one. India/Brazil/Russia/South Africa low — programme recipients/peripheral to design.

Japan settles the yen domestically but authors no clearing rail the wider world must route through; the yen is a settlement unit, not a layer others are bound to. Its modest score reflects sovereign control of its own currency's clearing without any structural hold on global settlement, which still flows through dollar rails Tokyo does not govern.

How the field was judged across the 12US dominant: CHIPS (~$1.8tn/day, US-governed via The Clearing House) + Fedwire ($1,148tn annual) clear the dollar — the rail the world routes through. Euro RTGS (TARGET2, Eurosystem) gives DE/FR/IT a mid-tier bloc rail. China (CIPS) building but smaller; UK (CHAPS, GBP) modest; others minimal own-rail control. Positional: a fixed pool of world settlement sliced by who owns the clearing layer.

Japan holds no power to deny a counterparty access to the global settlement rails — that exclusion power sits with the US and, collectively, the EU. Its low score reflects a state that conforms to exclusions others author rather than directing access to the rail itself.

How the field was judged across the 12Power to cut access to the settlement system. US overwhelming — it directs exclusions with full extraterritorial reach (OFAC/SDN, SWIFT de-designation; tier: 'full extraterritorial exclusion'). EU secondary — can act collectively on SWIFT (DE/FR/IT 'real-lesser'); UK post-Brexit own OFSI regime (real-lesser). Others none. Positional: who can deny others access to the rail.

Japan runs no alternative to US-controlled settlement; as a dollar-aligned economy it has no rail built to escape the mainstream and provides essentially none of this escape capacity. Its floor-level score reflects an actor fully inside the dollar settlement order with no independent route around it.

How the field was judged across the 12Who runs an independent rail escaping US control. China (CIPS) the main one — 194 direct + 1597 indirect participants, 126 countries, ~5100 banks reached (Mar 2026); the only state with a real alternative dollar-rail. Russia (SPFS) minor domestic substitute. EU (INSTEX) defunct/nil. US scored low BY DESIGN — it IS the mainstream rail, not an alternative — so China leads this provision-of-escape component. Positional: share of the capacity to route around US-controlled settlement.

Japan has effectively no independent capacity to deny others access to the financial rails; at a near-floor score it is a participant inside the dollar-clearing system, not a gatekeeper of it. When it acts it adopts designations originated elsewhere rather than wielding a denial lever of its own, leaving it bound by an exclusion architecture it neither built nor controls.

How the field was judged across the 12Capacity to exclude others from the financial system unilaterally. US overwhelming — full unilateral exclusion of the dollar/SWIFT chokepoint (Iran 2012, Russia 2022). EU collectively secondary (DE/FR/IT mid — can act on SWIFT in concert). UK post-Brexit own OFSI regime, mid-low. Others minimal. Positional: who controls denial of access to the chokepoint others cannot route around.

Japan's sanctions reach only its own nationals and firms; it has no mechanism to force third-country conformity. It is, if anything, on the receiving end of US secondary pressure, making it a complier rather than a compeller on this lever.

How the field was judged across the 12Whose sanctions force THIRD-country compliance (secondary sanctions, dollar-clearing leverage). US uniquely extraterritorial — forces global third-country conformity. EU/UK far behind: no concept of secondary sanctions, EU passed a blocking statute to RESIST US secondary reach (measures bind only own nationals = primary). Others negligible. Positional: share of the capacity to make third parties conform.

Japan houses sizeable institutional managers and a deep savings pool, but its firms are not where the world's cross-border allocation decisions are authored; they manage largely domestic capital and place abroad as takers into US-governed markets rather than governing the allocation function themselves.

How the field was judged across the 12US overwhelmingly dominant (63% of global AUM, the Big-Three). Positional: a fixed pool of the world's investable capital sliced among manager-domiciles — US holds the majority slice. UK (asset-mgmt hub) + France (Crédit Agricole/Amundi) the next tier. China's AUM is large but domestically-bound, not globally-allocating. Others minor.

Japanese institutions hold scattered cross-border stakes and substantial domestic ownership, but they are not the residual-claim holders on the world's critical firms; Japan's capital is a minority co-owner in a structure whose largest slices are taken by US holders.

How the field was judged across the 12US dominant — the Big-Three are the largest or near-largest holders of most global strategic firms (the D18 attribution: TSMC/ASML power resolves to US capital). Positional: a firm's equity is a fixed pool sliced among holders; US holders take the largest slices. China owns its OWN champions (state + domestic funds) = a self-contained ownership bloc, scored modestly (owns inward, not the world's firms). Others hold scattered stakes.

Japan is a meaningful source of outbound portfolio-equity allocation but is not the destination the world's savings route into. It places capital abroad into US-and-UK-governed markets more than it draws the world's savings home — a participant on the using side of the allocative system rather than a hub.

How the field was judged across the 12US + UK are the cross-border equity hubs (savings worldwide route into US markets; London the intermediation centre). SUPPORTING signal only — CPIS vintage spread (US 2011 vs JP 2022, India GAP) bars it from a clean cross-section, so it is weighted lightly and the score leans on the US-market-depth + AUM picture. India GAP flagged.

Clear second tier. Japan (JISC) holds a substantial bloc of secretariats and convenorships, well above the mid-pack, but sits a tier below the US/Germany/China pole. It co-authors in many committees without anchoring the structure overall.

How the field was judged across the 12Composite of secretariat-holding (the rule-pen) and convenorship (working-level steering). Germany/China/US form the top tier (DE leads secretariats, US leads convenorships, CN second on both — the rise of SAC is the standout structural fact). Japan/France/UK a clear second tier. Italy/Canada/India mid. Russia/Brazil/S.Africa low — participants, not pen-holders.

Mid-tier. Japan has a real RFC-authorship record and engineering depth in protocols, contributing to the standards others use, but its shaping weight sits below the European cluster and far below the US custodial anchor.

How the field was judged across the 12US overwhelmingly dominant — both by RFC authorship (6180, ~10x the next) AND by historical/custodial control of the foundational protocol stack (IETF origin, IANA/ICANN, root governance). Europe (DE/UK/FR) and China form a second tier on authorship volume; China rising. Basis note: the metric doc asks who *shapes*, not who *counts* — historical custody of the protocol stack (not author volume alone) anchors the US top score.

Minor rule-influence. Japan has begun asserting some authority over the dominant platforms through domestic competition rulemaking, giving it a foothold in setting conduct conditions, but it largely conforms to a platform order owned and gatekept by the US.

How the field was judged across the 12Anchored to the per-nation authority_tier below (rule-setting / access-denial, NOT user share). US is the structural platform gatekeeper — owns and sets access rules for the app stores, cloud, and mobile OS the world must route through, plus export-control-linked access denial. China second: a sovereign-walled parallel platform sphere (super-apps, HarmonyOS, domestic cloud) that gatekeeps the China market but is not yet globally gatekeeping. India/Brazil are market-gatekeepers (app bans, data-localization, court actions) over their own markets. EU states (DE/FR/IT) + UK are rule-setters-not-owners (DMA/DSA/GDPR / DMCC 'Brussels effect'), scored individually per D16. Russia sovereign-walled-minor; Canada rule-influence-minor; South Africa rule-taker.

Japan sits in the research-strong second tier: real depth and a capacity to originate, but its frontier breakthroughs are fewer and narrower than the US-China pair. It contributes to the leading edge in selected domains rather than defining where that edge moves, placing it among the followers-with-capability rather than the sources.

How the field was judged across the 12US is the origination frontier across domains (AI, biotech, internet, space). China the clear #2 and rising fast (frontier-model origination near-parity). UK/Germany/France/Japan/Canada a research-strong second tier (UK DeepMind-lineage, France Mistral, Canada AI-research depth). Italy/India/Russia mid (capacity but few frontier origins). Brazil/S.Africa low. This is where the metric surfaces 'leader vs follower' honestly.

Japan converts advanced research into commercial strength effectively but lacks a large defence-R&D feedstock to spill over, given its constrained military base. Its pipeline runs more from civil and industrial research than from defence, placing it at the top of the second tier rather than among the leaders on this specifically military-to-commercial lever.

How the field was judged across the 12US top — uniquely effective defence→commercial spillover engine (DARPA archetype,). China high on both spend scale AND a deliberate civil-military-fusion pipeline. Russia scores above its GERD rank on the MILITARY side (strong defence R&D) but weak commercial spillover. The score weights spillover EFFICIENCY + scale, not GERD alone — so China's spend lead does not flip the #1.

Japan has limited frontier-model presence and no compute gatekeeping power; it accesses the frontier on terms set by the US-controlled stack. Its position is that of a capable adopter rather than an author or gatekeeper of the current AI frontier.

How the field was judged across the 12US controls the frontier-model + compute stack (top labs + the chip-design/cloud chokepoints it can deny — see technology-denial-regimes). China the only near-peer on frontier-model output (192 vs 210 since 2023) but compute-constrained by US export controls. France (Mistral) the strongest of the rest. Brazil/S.Africa/India/Italy near-zero frontier presence — genuine, not gaps.

Japan authors meaningful national controls of its own rather than merely echoing US lists — it codified the 23-item advanced-chipmaking-equipment regime through METI, effective 23 July 2023, and operates within the EU-adjacent Wassenaar frame. It is a secondary regime author at the frontier of semiconductor-equipment denial, which earns it the strongest non-US score on this lever, well below Washington but clearly above the pure compliers.

How the field was judged across the 12US dominant — authors the binding entity/chip-control lists others react to; Wassenaar is its multilateral frame. Japan/NL-tier (DE/FR/UK) author meaningful national controls + EU dual-use reg. China NON-member of Wassenaar but builds its OWN counter-denial (rare-earth/gallium export controls) — scored low here on WESTERN-regime authorship but note: China's denial capacity lives in indispensable-input-control (Production). Russia a member but no frontier tech to deny. Brazil/SA negligible.

Japan scores as a compliant enforcer with some reach of its own — it implemented the 23-item equipment controls in July 2023 and licenses those exports through METI, giving it independent enforcement over a frontier category. It enforces largely in alignment with the allied denial frame rather than projecting its own extraterritorial rules, which places it as the strongest secondary enforcer below the US but well short of compelling third-party compliance.

How the field was judged across the 12US near-monopoly on extraterritorial enforcement (FDPR + market access leverage). Japan scores as a COMPLIANT enforcer (implemented the 23-item SME controls July 2023) with some own reach. EU states enforce within EU dual-use frame. China has counter-enforcement (its own export-control law, unreliable-entity list) but limited extraterritorial bite — scored modest. Most others are rule-TAKERS who comply, not enforcers.

Japan can withhold technology that bites: it holds critical positions in semiconductor-manufacturing equipment and the specialty materials and tools feeding the leading-edge fab chain, several of which have few substitutes. That genuine non-substitutability in the equipment-and-materials layer earns it the strongest criticality score after the US — real bite at the frontier, though narrower than Washington's full-stack chokehold.

How the field was judged across the 12US holds the most non-substitutable chokepoints (EDA, GPU design, key SME). Japan strong (SME). China scores MODEST here despite being the TARGET — because it now wields its OWN bite via rare-earth/gallium/germanium controls (non-substitutable inputs), a genuine counter-denial; but its advanced-tech denial capacity is limited. NL (the EUV monopoly) is the single most critical non-12 node. Most nations: nothing non-substitutable to deny.

Japan is a high-standard adherent that helps sustain the rules rather than originate them. It aligns closely with the US-EU patentability and enforcement framework and participates actively in WIPO, so it shapes the regime at the margin but follows the architecture others set, placing it mid-table.

How the field was judged across the 12US dominant — TRIPS architect + ongoing regime-driver (Special 301, TRIPS-plus). EU bloc strong co-author (DE/FR/IT carry EU-negotiation weight on rule-setting). Japan high-standard adherent. China/India/Brazil/SA = the rule-TAKER / contesting bloc (India+Brazil+SA led the TRIPS-flexibilities / access-to-medicines pushback — genuine but DEFENSIVE agenda, scored modestly above pure takers). Russia low.

Japan enforces IP effectively within its own large market but exercises that exclusion largely domestically, without the extraterritorial market-access leverage the US wields or the bloc-wide reach of the EU court system. It sits mid-table as a strong domestic enforcer with limited external reach.

How the field was judged across the 12US near-unique extraterritorial exclusion (Section 337 import bans + market leverage). EU strong but bloc-internal (UPC from 2023 — DE the heaviest patent-litigation venue). China scores notably here — growing enforcement + anti-suit injunctions setting global FRAND rates (a real counter-reach). Most others enforce only domestically.

Japan is a respected regional/heritage idea-voice rather than a paradigm-author. It contributes to economic and policy thinking but does not originate a living paradigm that others accept as the legitimate frame for debate the way the US default operates. Its conferred ideational authority is real but modest and case-specific, which keeps it in the lower band on this lever.

How the field was judged across the 12Scored from the per-nation authority_tier below (belief-conferral, NOT export volume). US is the paradigm-author — originates the dominant economic/policy paradigms and the agenda-defining academic + think-tank ecosystem (the modern Adam-Smith lever). UK is the anglophone co-author (Oxbridge/LSE, The Economist), punching above size. China is the rising counter-paradigm — the only state offering a coherent alternative belief-model at scale (state-led development, 'Chinese modernization'), though adopted more by dependency than voluntary conviction. France/Germany hold distinct tradition/model authority (Enlightenment/Francophonie; Ordoliberalism). India rising-civilizational; Russia spoiler-narrative; the rest regional/heritage voices.

Japan has strong domestic institutions but does not provide a credential system others must operate in, and Japanese is not a working global language — a point Strange flagged directly. It functions largely within its own linguistic and academic sphere, so its conferral of language-and-credential authority is low.

How the field was judged across the 12The anglophone US-UK axis dominates — English as lingua franca + the top credential institutions + the student magnet. The US is the clear #1; UK punches far above size (language + Oxbridge/Russell Group). Canada/France mid (credential magnets in their language spheres). China scores modestly DESPITE rising universities — it is a net credential IMPORTER (Mandarin not a lingua franca; sends 1M+ students out). India high English-use but credential IMPORTER. The metric rewards whose system others OPERATE IN.

Japan's values diffuse mainly through admiration and aesthetic appeal rather than adopted civic or political norms. Others appreciate its model without operating by its value-set, so its belief-transmission is low — attraction more than norm-conferral.

How the field was judged across the 12Scored on belief ADOPTION, not media volume, from the per-nation authority_tier below. US is the default global value-set exporter (liberal-democratic, market, individual-rights norms). UK/France co-export rule-of-law / civic norms with real diffusion (Commonwealth, Francophonie). China is the genuine alternative-norm pole — development-without-conditionality and sovereignty-over-intervention norms adopted across parts of the BRI-linked Global South. Germany a regulatory/social-market norm-anchor; Russia diffuses sovereigntist counter-norms by affinity not authority; the rest narrower regional or aesthetic norm-sets.

Japan is a high-volume knowledge producer whose output is routed through Western indexing and ranking machinery it does not author. It sets none of the rules deciding which findings count and operates no rival channel, leaving it a sophisticated but channel-dependent content supplier.

How the field was judged across the 12US + UK dominate (Clarivate/WoS + Elsevier-RELX's UK base + the top journals/venues). Germany strong (Springer Nature). The rest are content PRODUCERS routed through Western channels, not channel-owners. China building rival indices (CNKI, its own journals) — rising but its researchers still chase WoS/Scopus indexing = channel-dependency. The metric scores who DECIDES which findings count.

Japan operates only a regional PNT capability, not a global orbital channel others depend on. It augments rather than substitutes the systems run by larger providers, leaving it a partial provider regionally and a dependent globally.

How the field was judged across the 12US dominant — GPS (the default the world depends on) + Starlink's 65% LEO share. China #2: BeiDou (full global) + rising constellations. Russia: GLONASS (global but degraded). EU (DE/FR/IT) share Galileo = real bloc orbital channel. Japan/India regional PNT only. Brazil/SA = pure dependents, no orbital channel.

Japan participates in ITU and spectrum processes but largely works within rules authored by the US and the larger blocs. It is an active and capable participant yet a marginal author — closer to a rule-taker than a rule-setter on the channels.

How the field was judged across the 12US leads (internet governance + heaviest ITU/orbital presence + GPS standard). EU bloc strong on spectrum + data-governance rules (Galileo + GDPR — DE/FR/IT bloc weight). China rising ITU influence + sovereign data rules + BeiDou standard. Russia ITU member with GLONASS standard. Others = rule-takers.