'A threat to British interests': UK tears into Tehran's 'reckless' missile strike on Diego Garcia

The strike marked a rare attempt to hit a distant Western base, signaling Tehran's willingness to project force beyond its immediate region
PUBLISHED MAR 21, 2026
This image released by the US Navy shows an aerial view of Diego Garcia in the Chagos Island group (US Navy via AP, File)
This image released by the US Navy shows an aerial view of Diego Garcia in the Chagos Island group (US Navy via AP, File)

LONDON, ENGLAND: The United Kingdom condemned what it called Iran’s “reckless attacks” after ballistic missiles were launched toward the joint US-UK military base on Diego Garcia in the Indian Ocean.

Iran fired two intermediate-range ballistic missiles at the base on Friday morning local time. Neither missile struck the facility, the official said.

The semi-official Mehr news agency in Iran later confirmed that the missiles were aimed at what it called “the military base of the oppressors in Diego Garcia.”

Fire and plumes of smoke rise from an oil facility in Fujairah, United Arab Emirates, Saturday, March 14, 2026. (AP Photo/Altaf Qadri)
Fire and plumes of smoke rise from an oil facility in Fujairah, United Arab Emirates, Saturday, March 14, 2026 (AP Photo/Altaf Qadri)

Diego Garcia attack marks widening reach

The targeting of Diego Garcia is significant because of the island’s strategic military importance. Located around 3,800 kilometres from Iran, the base hosts an airfield capable of accommodating long-range US bombers.

Mehr described the strike as an important escalation, saying it represented “a significant step by the Islamic Republic of Iran in threatening the interests of the United States and its allies beyond the borders of West Asia.”

The attempted strike signaled an expansion of the conflict’s geographic scope, bringing a key Western military outpost in the Indian Ocean into Iran’s line of fire.

AYLESBURY, ENGLAND - SEPTEMBER 18: (L-R) U.S. President Donald Trump and UK Prime Minister Keir Starmer shake hands during a press conference at Chequers at the conclusion of a state visit on September 18, 2025 in Aylesbury, England. This is the final day of President Trump’s second UK state visit, with the previous one taking place in 2019 during his first presidential term. (Photo by Leon Neal/Getty Images)
US President Donald Trump and UK Prime Minister Keir Starmer shake hands during a press conference at Chequers at the conclusion of a state visit on September 18, 2025, in Aylesbury, England (Leon Neal/Getty Images)

Britain calls attack a threat to its interests

Responding on Saturday, March 21, the UK Defence Ministry said Iran’s actions posed a direct challenge to British interests and its allies.

"Iran’s reckless attacks, lashing out across the region and holding hostage the Strait of Hormuz, are a threat to British interests and British allies,” the ministry said.

The statement points to London’s growing alarm over Tehran’s military moves and the broader threat they pose to regional stability and maritime security.

This image provided by U.S. Central Command shows a F/A-18E Super Hornet launching from the USS Abraham Lincoln (CVN 72) in support of Operation Epic Fury on Monday, March 2, 2026. (US Navy via AP)
An F/A-18E Super Hornet launching from the USS Abraham Lincoln (CVN 72) in support of Operation Epic Fury on Monday, March 2, 2026 (US Navy via AP)

UK had authorized use of bases for defensive operations

The attack came a day after the British government announced that it had granted the United States permission to use British bases for specific defensive operations.

According to the UK government, the approval was given for operations intended “to degrade the missile sites and capabilities being used to attack ships.”

The disclosure highlights Britain’s direct support for US-led defensive measures in the region, even as tensions with Iran continue to intensify.

Ships wait offshore in the Strait of Hormuz off Khor Fakkan, United Arab Emirates, Wednesday, March 11, 2026. (AP Photo/Altaf Qadri)
Ships wait offshore in the Strait of Hormuz off Khor Fakkan, United Arab Emirates, Wednesday, March 11, 2026 (AP Photo/Altaf Qadri)

The reference by the UK Defence Ministry to the Strait of Hormuz points to wider Western concerns about the impact of the conflict on global shipping and energy supplies.

With Iran accused of escalating attacks across the region, the attempted strike on Diego Garcia is likely to deepen fears of a broader confrontation involving US and British military interests far beyond the Gulf.

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