# Diego Garcia **Domain:** Indian Ocean / Military Infrastructure / Strategic Basing **Doc Type:** Place and Infrastructure Node **Maturity:** Developed **Concept Hub:** [[wiki/War With Empire|War With Empire]] ## Definition **Diego Garcia is the largest island in the [[wiki/Chagos Archipelago|Chagos Archipelago]] and the location of a major United States–United Kingdom defense facility.** Its geography supports long-range military operations, logistics, communications, and access across the Indian Ocean and adjacent theaters. ## Sovereignty and Use The base illustrates separation among territorial title, host responsibility, operating agreements, and practical military use. Britain negotiated transfer of Chagos sovereignty to Mauritius while preserving base access, but the change required modification of the existing British-American agreement. [[articles/war with empire/Imperial Financial Influence Operations — Cutting the Head off the Snake|Imperial Financial Influence Operations]] uses this dependency to show that a strategic user can hold decisive leverage over how the formal sovereign disposes of territory. That is the core case for [[wiki/Imperial Receivership|imperial receivership]]. ## Boundary Strategic importance does not settle the sovereignty dispute or the claims of displaced Chagossians. Operational access, legal title, decolonization, and return rights require separate analysis. ## See Also [[wiki/Operational Autonomy|Operational Autonomy]] · [[wiki/Territorial Guarantee Repricing|Territorial Guarantee Repricing]] · [[wiki/Instrumented Alliance|Instrumented Alliance]] · [[wiki/British Overseas Territory|British Overseas Territory]]