A document seen by the Conservative Post and attributed to a Chinese whistleblower suggests that Beijing is closely monitoring potential strategic opportunities arising from a proposed transfer of sovereignty over the Chagos Archipelago from the United Kingdom to Mauritius, with particular attention to the US-UK military base on Diego Garcia.
The document, written in Chinese and presented as an internal analytical assessment, outlines how changes in legal, financial, and treaty-based arrangements could, over time, complicate the continued Western military presence on the island.
Diego Garcia hosts a major US-UK military facility that plays a key role in operations across the Middle East, Africa, and the Indo-Pacific.
According to the text, the author argues that the sovereignty transfer could create a “window of opportunity” in which existing agreements underpinning Western access to Diego Garcia become more vulnerable. The assessment highlights political uncertainty in the United Kingdom, the financial sustainability of lease-related payments, and Mauritius’s future policy choices as potential pressure points.
The document also focuses on Mauritius’s status as a signatory to the African Nuclear-Weapon-Free Zone Treaty, suggesting that stricter enforcement or reinterpretation of treaty obligations could subject nuclear-related military activities on Diego Garcia to legal and political scrutiny. While Mauritius has previously stated that the treaty does not apply to the base, the document claims there may be flexibility in how those obligations are implemented in the future.
Economic cooperation is also identified as a potential influence, with the author noting Mauritius’s reliance on foreign investment and financing for infrastructure, ports, and digital systems. The assessment argues that long-term economic engagement could encourage policy alignment, particularly when framed around sovereignty, international law, and anti-colonial narratives.
The whistleblower document does not call for direct military action and instead emphasises patience, indirect approaches, and adherence to international legal narratives. It suggests that, over a five- to ten-year horizon, Western military operations in the central Indian Ocean could face increasing constraints without the need for new Chinese military deployments.
There has been no official confirmation from Chinese authorities regarding the authenticity of the document or the views expressed within it. US and UK officials have not publicly commented on the claims. Analysts note that Diego Garcia remains a highly sensitive strategic asset, and any changes to its status would likely face significant diplomatic resistance.
The document adds to ongoing international debate over the future of the Chagos Archipelago, which has long been contested amid decolonisation disputes and legal rulings related to sovereignty and the rights of displaced islanders.
