As the Flag Changes in Chagos, Who Keeps the Power?

In the middle of the Indian Ocean lies a dot on the map so small it is barely visible: the Chagos Archipelago. Yet this cluster of islands is far more than a remote territory. It stands as one of the clearest stages upon which the unfinished legacy of colonialism and the realities of global power competition continue to play out.

Under a recent agreement between the United Kingdom and Mauritius, sovereignty over the Chagos Islands is to be transferred to Mauritius. At first glance, the move appears to be delayed post-colonial justice finally delivered. In reality, the Chagos question is not simply about the transfer of a flag. It illustrates how colonial legacies remain subordinated to contemporary power balances.

For the islanders who were uprooted in the name of strategic necessity, justice remains elusive — even after six decades.

A Short History, a Long Shadow

After periods of Dutch and French rule, Mauritius came under British control in 1814. Although it gained independence in 1968, London did not return the Chagos Islands.

In 1965, just before Mauritian independence, Britain detached the Chagos Archipelago. The indigenous population was forcibly removed. British authorities reportedly killed residents’ dogs to intimidate them into leaving. Hundreds of families were deported to Mauritius and the Seychelles, condemned to statelessness and poverty.

The objective was clear: depopulate the islands and establish a strategic military outpost for the United States in the Indian Ocean. As the expulsions unfolded, construction began on a military base on Diego Garcia.

Today, Diego Garcia remains one of America’s most critical military assets in the Indian Ocean. It has served as a logistical hub for operations ranging from the Gulf Wars to Afghanistan. Now, with China’s expanding presence in the region and its growing ties with Mauritius, the island has once again moved to the center of global rivalry.

The matter was never solely between Mauritius and the United Kingdom. Washington’s strategic interests have always loomed in the background.

Sixty Years of Exile

For decades, Chagossians have sought the right to return, while Mauritius pursued legal avenues to challenge British control.

In 2019, the International Court of Justice ruled that the continued administration of the Chagos Islands by the United Kingdom was unlawful. The United Nations General Assembly called on Britain to return the territory without delay. The legal conclusions were clear.

Yet London ignored them for five years, citing U.S. military interests. In today’s world, international law often appears meaningful only when it aligns with the interests of powerful actors. From Gaza to Sudan, from Congo to Chagos, the pattern suggests that legal norms function less as binding mechanisms and more as instruments to be invoked or sidelined depending on geopolitical convenience.

When law serves the powerful, it is described as “universal.” When it challenges them, it becomes “symbolic.”

After five years in limbo, the issue resurfaced on October 3, 2024, with a surprise agreement envisioning the transfer of the islands — excluding Diego Garcia.

To this day, the framework provides neither a clear timetable nor firm guarantees for the return of the displaced islanders.

Symbolic Sovereignty

With sovereignty shifting to Mauritius, Britain relieves itself of legal pressure and burnishes its post-colonial image — while preserving the strategic core.

Under a 99-year lease arrangement, the joint UK-U.S. military presence on Diego Garcia will continue. Britain retains veto authority over construction, can restrict the passage of foreign military vessels, and could effectively sideline commitments such as the African Nuclear-Weapon-Free Zone Treaty (Pelindaba Treaty).

Rather than direct colonial administration, London has opted for a model that secures military access while transferring nominal sovereignty.

If the runway, radar systems, and logistical corridors remain intact, the change of flag carries limited practical meaning.

Trump’s Intervention and the Bargain Behind the Curtain

Global powers are redefining the playing field on their own terms. If there is a principal architect in this recalibration, it is Washington.

U.S. President Donald Trump initially described Britain’s decision to transfer the islands as “a great mistake,” reminding observers where ultimate strategic authority lies. For the United States, Diego Garcia is a vital counterweight to China’s growing port investments and maritime reach in the region. Mauritius’ distinction as the first African country to sign a free trade agreement with China in 2019 has further fueled Washington’s concerns.

In Trump’s view, even the slightest uncertainty regarding the island’s status could weaken U.S. deterrence.

But the issue extends beyond the Indian Ocean. As British Prime Minister Keir Starmer noted in Parliament, Trump also used his criticism to pressure London over Greenland. His intervention exposed the limits of Britain’s independent maneuvering space.

More Than a Runway

In Trump’s discourse, there is little room for the suffering of the Chagossians or for international law. The primary metric remains “America First.”

In a recent statement, he openly suggested that Diego Garcia could be used in the event of a confrontation with Iran, underscoring its role in Middle Eastern military strategy.

Diego Garcia is not merely a stopover for bombers or refueling tankers. Beneath the ocean floor run critical communication cables. Antennas monitor space. Integrated command networks tie the island into the architecture of modern warfare.

In the same week, Britain was negotiating another strategically sensitive territory: Gibraltar. The long-unresolved Brexit dimension was to be settled before the European Union’s new border system takes effect on April 10. Yet unlike Chagos, Gibraltar does not trigger alarm in Washington. There is no massive U.S. base there, no major Chinese footprint. The contrast underscores a simple truth: where great-power interests intensify, negotiations become fraught.

Sovereignty or Access?

The Chagos agreement reflects a classic realpolitik compromise. Sovereignty is symbolically transferred, strategic access is materially preserved, and the broader balance of power remains secure.

And what of the Chagossians? The agreement offers no concrete guarantee of return and contains no explicit compensation for the inhumane treatment they endured. The flag in Chagos may change, but the language of power does not.

And that language continues to prioritize access over justice.

The original version of this article was published in Turkish on Independent Türkçe.