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.
• JPN · Partner: The 1960 Treaty of Mutual Cooperation and Security and Article VI basing arrangements make Japan a core host and treaty partner.
• KOR · Partner: The 1953 Mutual Defense Treaty and the centrality of Camp Humphreys make South Korea a core treaty and posture node.
• PHL · Partner: The 1951 Mutual Defense Treaty, Visiting Forces Agreement framework, and EDCA expansion place the Philippines inside the active alliance map.
• AUS · Partner: ANZUS and the U.S. Force Posture Initiatives, especially Marine Rotational Force-Darwin and related infrastructure, make Australia a key alliance platform.
• IND · Partner: Official U.S.-India and Indian statements describe a comprehensive global strategic partnership. The relationship has no formal mutual-defense treaty.
• 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.
• 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.
• Washington, DC: Washington sets U.S. treaty policy, defense budgets, and regional force posture.
• Yokosuka: Yokosuka hosts the U.S. 7th Fleet and the Navy's only permanently forward-deployed carrier strike group.
• Kadena Air Base: Kadena is a major U.S. air-power hub in the Pacific.
• Camp Humphreys: The largest overseas U.S. military installation anchors the Korean Peninsula portion of the alliance map.
• Manila: Manila manages alliance diplomacy, VFA and EDCA implementation, and maritime-security coordination.
• Darwin: Darwin hosts Marine Rotational Force-Darwin and sits inside the U.S. Force Posture Initiatives as a recurring alliance platform.
• Andersen AFB and Joint Region Marianas: Guam supports Indo-Pacific power projection and a more dispersed U.S. force posture.
• Tokyo: Tokyo decides host-nation support, force modernization, and the politics of the bilateral alliance.
• U.S.-Japan treaty and basing framework: A mutual-security treaty and basing agreements make Japan a core host for U.S. forces.
• 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.
• U.S.-Philippines MDT plus EDCA access: The 1951 treaty and EDCA give U.S. forces access to Philippine sites and support joint operations.
• 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.
• 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.