UK halts Chagos sovereignty transfer amid US geopolitical pressure, exposing colonial legacy and militarised island disputes

The Chagossian people, forcibly removed from their homeland between 1967–1973 to make way for the US military base, represent a living Indigenous community denied self-determination. Their oral histories and land-based knowledge systems were systematically erased during displacement, and their legal claims have been repeatedly dismissed by UK courts despite ICJ rulings. The Chagossians' struggle is not just about land but about cultural survival, as their language (Chagossian Creole) and traditions are tied to the islands' ecosystems, now degraded by military activities.

The Chagos Archipelago's fate is rooted in the UK's Cold War strategy to maintain military dominance in the Indian Ocean, culminating in the 1966 UK-US agreement that leased Diego Garcia for 50 years (later extended). This mirrors earlier colonial tactics, such as the 1814 transfer of Mauritius (including Chagos) from France to Britain, where sovereignty was traded without consulting Indigenous populations. The 2019 ICJ advisory opinion and 2020 UNGA resolution demanding UK withdrawal highlight how international law has been weaponised to delay decolonisation.

Mauritius frames the Chagos dispute as a test of postcolonial sovereignty, while African and Caribbean nations view it as emblematic of Western neocolonialism, linking it to cases like Diego Garcia's use in US interventions in Iraq and Syria. In the Pacific, parallels emerge with the US military's occupation of Okinawa, where Indigenous Ryukyuan people face similar displacement and environmental degradation. The African Union's 2021 resolution condemning the UK's occupation underscores a Pan-African solidarity with Mauritius' claim.

Scientific studies confirm the ecological damage to Chagos' coral reefs from military activities, including dredging and fuel spills, which disrupt marine ecosystems and threaten biodiversity hotspots. Research also highlights the islands' role in climate resilience, with Chagos' unspoiled reefs serving as a natural barrier against cyclones—a function compromised by militarisation. The UK's refusal to allow independent environmental assessments of Diego Garcia's impact violates the precautionary principle enshrined in the UN Convention on Biological Diversity.

Chagossian artists and writers, such as Lisette Talate and Charlesia Alexis, have used poetry and music to preserve their cultural memory, with works like 'Chagos: The Forgotten People' becoming symbols of resistance. The islands' spiritual significance to Chagossians is tied to ancestral burial sites and sacred landscapes, now inaccessible due to military restrictions. In Mauritian culture, the Chagos dispute is often framed through the lens of 'diaspora memory,' where songs and oral traditions keep the homeland alive despite physical separation.

If the UK proceeds with transfer, Mauritius must navigate balancing US military access with environmental restoration and Chagossian resettlement—a challenge requiring international funding and oversight. A worst-case scenario involves prolonged militarisation, with the US expanding Diego Garcia's role in drone warfare, exacerbating regional tensions with China and India. Conversely, a just resolution could set a precedent for decolonisation in the Indian Ocean, with Chagos becoming a UNESCO Marine Protected Area and a hub for climate adaptation research.

Chagossian activists, including Olivier Bancoult and the UK Chagos Support Association, have spent decades advocating for return, only to face legal and political obstruction. Their narratives are consistently sidelined in favour of geopolitical analysis, with mainstream media prioritising Trump's or Starmer's statements over testimonies of displacement. Even within Mauritius, Chagossian voices are often tokenised, with their demands for reparations or co-management of the islands marginalised in favour of state-led sovereignty claims.