Iran launched unsuccesful attack on Diego Garcia, BBC understands

Iran fired two ballistic missiles at the British Indian Ocean Territory

Iran fired two ballistic missiles at the British Indian Ocean Territory, the Wall Street Journal and CNN reported overnight into Saturday, citing unnamed US officials, but neither reached their target.

One missile reportedly failed in flight, while the other was intercepted by a US warship. It is unclear when the missiles were supposedly fired.

It is understood the attempted air strike occurred before the UK agreed to let the US use British military bases to hit Iranian sites targeting shipping through the Strait of Hormuz.

The US military declined to comment on the incident

A UK Ministry of Defence spokesperson said: "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."

Diego Garcia is around 3,800km (2,360 miles) from Iran - thought to be well beyond the reach of even Iran's farthest-ranging missile.

The airbase on the small, remote atoll is strategically located and is capable of accommodating long-range bombers. It has been used as a launchpad for operations in the Middle East for years.

However, its use in US strikes on Iran has been limited as the UK government has only allowed British airbases to be used for strikes on sites targeting UK interests and allies in the region.

It expanded targets under this "collective self-defence" justification to include Iranian sites being used to threaten vessels travelling through the Strait of Hormuz - a key shipping route through which a fifth of the world's oil flows - on Friday.

The UK's staid approach to the conflict has repeatedly drawn the ire of US President Donald Trump, who said it "should have acted a lot faster" to help secure the waterway and temper skyrocketing oil prices.

He earlier called Nato allies "cowards" for refusing to offer warships for what he described as a "simple" military task with "little risk".

Iran's Foreign Minister Abbas Araghchi said the UK's participation was "putting British lives in danger" and that Iran "will exercise its right to self-defence".

Current Chagos Islands status

The Chagos Islands are currently owned by the UK, but the British government has agreed to cede sovereignty of them to Mauritius and lease back the base on Diego Garcia.

Prime Minister Sir Keir Starmer has previously insisted the deal was necessary to protect the continued operation of the base, amid previous attempts from Mauritius to dispute the legality of British sovereignty over the islands.

The Chagos Islands have been under British control since 1814 and were administered from Mauritius while it was a British colony.

In 1965, the Chagos Islands were made a British overseas territory in their own right, ahead of Mauritius gaining independence.

But Mauritius has long argued that it was illegally forced to give the islands away to gain independence.

However, the deal has faced opposition domestically, as well as from Chagossians who were expelled in the 1960s to make way for the airbase.

Trump has gone back and forth on the deal, recently describing it as a "big mistake" despite his administration giving its official backing.

Iran has launched waves of strikes on nations in the Middle East hosting US facilities, as well as Israel, which is also striking Iran.

Tehran has launched several unmanned drones at RAF Akrotiri in Cyprus, one of which struck its runway causing "minimal" damage earlier this month.

The attack raised questions over the UK's preparedness for the conflict. The government has since dispatched HMS Dragon, a Type 45 destroyer, to the region to protect the base, as part of wider defensive efforts.