World Stage
Documented maps
Familiar U.S.-alliance security lens
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The Indo-Pacific treaty system links U.S. forward forces, host-nation infrastructure, and distributed deterrence.
Map details and sources
Familiar U.S.-alliance security lens
The Indo-Pacific treaty system links U.S. forward forces, host-nation infrastructure, and distributed deterrence. Lens owner: Washington-centered security planning view. As of 2026-07-14.
- USA · Focus: This scene is organized around U.S. treaty commitments, forward posture, and budgeted resilience investments in the Indo-Pacific. Sources: Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/1.html; U.S. Department of Defense, 2024-07-30, https://www.defense.gov/News/Releases/Release/Article/3854902/joint-statement-on-the-philippines-united-states-fourth-22-ministerial-dialogue/; Australian Department of Foreign Affairs and Trade, n.d., https://www.dfat.gov.au/geo/united-states-of-america/united-states-of-america-country-brief; U.S. Department of Defense Comptroller, 2025-06-12, https://comptroller.defense.gov/Portals/45/Documents/defbudget/FY2026/FY2026_Pacific_Deterrence_Initiative.pdf
- JPN · Partner: The 1960 Treaty of Mutual Cooperation and Security and Article VI basing arrangements make Japan a core host and treaty partner. Sources: Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/1.html; Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/2.html; U.S. Air Force, n.d., https://www.kadena.af.mil/; Commander, Navy Region Japan, n.d., https://cnrj.cnic.navy.mil/Installations/CFA-Yokosuka/Welcome-Aboard/
- KOR · Partner: The 1953 Mutual Defense Treaty and the centrality of Camp Humphreys make South Korea a core treaty and posture node. Sources: Avalon Project, Yale Law School, 1953-10-01, https://avalon.law.yale.edu/20th_century/kor001.asp; U.S. Army, n.d., https://home.army.mil/humphreys/
- PHL · Partner: The 1951 Mutual Defense Treaty, Visiting Forces Agreement framework, and EDCA expansion place the Philippines inside the active alliance map. Sources: Lawphil Project, Republic of the Philippines, 1951-08-30, https://lawphil.net/international/treaties/mutdef.html; U.S. Department of Defense, 2024-07-30, https://www.defense.gov/News/Releases/Release/Article/3854902/joint-statement-on-the-philippines-united-states-fourth-22-ministerial-dialogue/
- AUS · Partner: ANZUS and the U.S. Force Posture Initiatives, especially Marine Rotational Force-Darwin and related infrastructure, make Australia a key alliance platform. Sources: Australian Department of Foreign Affairs and Trade, n.d., https://www.dfat.gov.au/geo/united-states-of-america/united-states-of-america-country-brief; Australian Department of Defence, n.d., https://www.defence.gov.au/defence-activities/programs-initiatives/united-states-force-posture-initiatives
- IND · Partner: Official U.S.-India and Indian statements describe a comprehensive global strategic partnership. The relationship has no formal mutual-defense treaty. Sources: Ministry of External Affairs of India, 2025-01 to 2025-02, https://www.mea.gov.in/Portal/ForeignRelation/US_Bilateral_Brief_0125.pdf
- TWN · Exposed: U.S. ties are officially robust but unofficial, grounded in the Taiwan Relations Act rather than a defense treaty; Taiwan sits inside the lens as a contingency-shaping actor. Sources: American Institute in Taiwan, 1979 text; 2026 explanatory letters and policy pages, https://www.ait.org.tw/policy-history/taiwan-relations-act/
- CHN · Competitor: Recent U.S. Indo-Pacific posture documents explicitly prioritize deterrence against the PRC, making China the principal competitive reference point in this lens. Sources: U.S. Department of Defense Comptroller, 2025-06-12, https://comptroller.defense.gov/Portals/45/Documents/defbudget/FY2026/FY2026_Pacific_Deterrence_Initiative.pdf
- Washington, DC: Washington sets U.S. treaty policy, defense budgets, and regional force posture. Sources: U.S. Department of Defense, 2024-07-30, https://www.defense.gov/News/Releases/Release/Article/3854902/joint-statement-on-the-philippines-united-states-fourth-22-ministerial-dialogue/; U.S. Department of Defense Comptroller, 2025-06-12, https://comptroller.defense.gov/Portals/45/Documents/defbudget/FY2026/FY2026_Pacific_Deterrence_Initiative.pdf; Ministry of External Affairs of India, 2025-01 to 2025-02, https://www.mea.gov.in/Portal/ForeignRelation/US_Bilateral_Brief_0125.pdf
- Yokosuka: Yokosuka hosts the U.S. 7th Fleet and the Navy's only permanently forward-deployed carrier strike group. Sources: Commander, Navy Region Japan, n.d., https://cnrj.cnic.navy.mil/Installations/CFA-Yokosuka/Welcome-Aboard/
- Kadena Air Base: Kadena is a major U.S. air-power hub in the Pacific. Sources: U.S. Air Force, n.d., https://www.kadena.af.mil/
- Camp Humphreys: The largest overseas U.S. military installation anchors the Korean Peninsula portion of the alliance map. Sources: U.S. Army, n.d., https://home.army.mil/humphreys/
- Manila: Manila manages alliance diplomacy, VFA and EDCA implementation, and maritime-security coordination. Sources: Lawphil Project, Republic of the Philippines, 1951-08-30, https://lawphil.net/international/treaties/mutdef.html; U.S. Department of Defense, 2024-07-30, https://www.defense.gov/News/Releases/Release/Article/3854902/joint-statement-on-the-philippines-united-states-fourth-22-ministerial-dialogue/
- Darwin: Darwin hosts Marine Rotational Force-Darwin and sits inside the U.S. Force Posture Initiatives as a recurring alliance platform. Sources: Australian Department of Defence, n.d., https://www.defence.gov.au/defence-activities/programs-initiatives/united-states-force-posture-initiatives
- Andersen AFB and Joint Region Marianas: Guam supports Indo-Pacific power projection and a more dispersed U.S. force posture. Sources: U.S. Air Force, n.d., https://www.andersen.af.mil/About-Us/Fact-Sheets/Display/Article/414606/36th-wing/
- Tokyo: Tokyo decides host-nation support, force modernization, and the politics of the bilateral alliance. Sources: Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/1.html; Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/2.html
- U.S.-Japan treaty and basing framework: A mutual-security treaty and basing agreements make Japan a core host for U.S. forces. Sources: Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/1.html; Ministry of Foreign Affairs of Japan, n.d., https://www.mofa.go.jp/region/n-america/us/q%26a/ref/2.html
- U.S.-ROK mutual defense and basing: The U.S.-ROK treaty supports the continued stationing of U.S. land, air, and sea forces in South Korea. Sources: Avalon Project, Yale Law School, 1953-10-01, https://avalon.law.yale.edu/20th_century/kor001.asp; U.S. Army, n.d., https://home.army.mil/humphreys/
- U.S.-Philippines MDT plus EDCA access: The 1951 treaty and EDCA give U.S. forces access to Philippine sites and support joint operations. Sources: Lawphil Project, Republic of the Philippines, 1951-08-30, https://lawphil.net/international/treaties/mutdef.html; U.S. Department of Defense, 2024-07-30, https://www.defense.gov/News/Releases/Release/Article/3854902/joint-statement-on-the-philippines-united-states-fourth-22-ministerial-dialogue/
- U.S. rotational posture through Darwin: Darwin provides recurring rotational access. It does not have the status of a permanent treaty base like those in Japan or South Korea. Sources: Australian Department of Foreign Affairs and Trade, n.d., https://www.dfat.gov.au/geo/united-states-of-america/united-states-of-america-country-brief; Australian Department of Defence, n.d., https://www.defence.gov.au/defence-activities/programs-initiatives/united-states-force-posture-initiatives
- Guam to forward alliance arc: Guam and Japan form linked nodes in a dispersed U.S. forward network, though their legal authorities and missions differ. Sources: U.S. Department of Defense Comptroller, 2025-06-12, https://comptroller.defense.gov/Portals/45/Documents/defbudget/FY2026/FY2026_Pacific_Deterrence_Initiative.pdf; U.S. Air Force, n.d., https://www.kadena.af.mil/; U.S. Air Force, n.d., https://www.andersen.af.mil/About-Us/Fact-Sheets/Display/Article/414606/36th-wing/
Documented membership maps
EU and NATO membership, and the 2020 RCEP signing. Each scene has its own date, literal key and sources.
Where do EU and NATO memberships overlap?
Both EU and NATOEU onlyNATO only