Chagos Islands Sovereignty Treaty Stalled as US Support Withdrawn

Marcus Williams, Political Reporter
3 Min Read
⏱️ 3 min read

In a significant setback for the UK government, plans to transfer sovereignty of the Chagos Islands to Mauritius have been declared “impossible” to finalise. Foreign Office Minister Stephen Doughty revealed that the proposed treaty, initially backed by the United States, has faltered due to a withdrawal of US support, effectively halting the legislative process.

Treaty Negotiations Collapse

During a recent session in the House of Commons, Doughty explained that the agreement with Mauritius was negotiated in close collaboration with the US, which had previously shown strong backing under the Trump administration. The minister noted that Trump had once described the treaty as “very strong and powerful,” indicating a level of bipartisan support in Washington that is no longer assured.

However, the political landscape has shifted dramatically. Doughty acknowledged that the current US administration’s stance has changed, rendering the treaty untenable. “Updating the 1966 UK-US agreement is essential to ratify the treaty,” he stated, indicating that without this update, the proposed legislation on the Chagos Islands cannot pass through Parliament this session.

Military Concerns

Central to the treaty was the lease of Diego Garcia, the largest island in the Chagos archipelago and a critical site for joint UK-US military operations. The bill entailed ceding sovereignty to Mauritius while allowing the UK to retain control over Diego Garcia for a further 99 years. Doughty expressed confidence that the treaty represented the best approach to ensure the military base’s operational continuity for future generations.

Despite the setback, he reassured MPs that the government remains committed to maintaining military readiness in the region. However, the implications of US withdrawal signal a deterioration in UK-US relations, particularly in light of recent tensions surrounding foreign policy issues such as the Iran conflict.

Impact on Chagossians

The delay in the treaty has raised concerns among the Chagossian community, many of whom view the agreement as the only viable pathway to a sustainable resettlement programme under Mauritian governance. Doughty acknowledged that this news will be disappointing for many Chagossians, who have long sought the right to return to their homeland.

As negotiations falter, the future of the Chagos Islands remains uncertain, exacerbating long-standing issues surrounding colonial legacy and indigenous rights.

Why it Matters

The collapse of the Chagos Islands treaty not only highlights the fragility of international agreements but also underscores the broader implications for UK foreign policy and military strategy in the Indian Ocean. As relations with the US cool, the UK must navigate complex geopolitical realities while addressing the rights and aspirations of the Chagossian people, whose voices remain vital in this ongoing saga.

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Marcus Williams is a political reporter who brings fresh perspectives to Westminster coverage. A graduate of the NCTJ diploma program at News Associates, he cut his teeth at PoliticsHome before joining The Update Desk. He focuses on backbench politics, select committee work, and the often-overlooked details that shape legislation.
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