Downing Street has said the sovereignty of the Falkland Islands rests with the UK, following a report indicating that the US could review its position on the British claim to the territory.

The internal Pentagon email, first reported by Reuters, hinted at potential measures the US might implement against allies perceived to have failed in supporting its campaign in Iran.

In light of the report, a spokesperson from No 10 stated: The Falkland Islands have hugely voted overwhelmingly in favour of remaining a UK overseas territory, and we've always stood behind the islanders' right to self-determination and the fact that sovereignty rests with the UK.

The prime minister's official spokesperson stressed that the UK government is unequivocal about its position regarding the Falkland Islands, stating, sovereignty rests with the UK and the islanders' right to self-determination is paramount. He mentioned that this stance has been clearly communicated to successive US administrations and asserted that nothing would change this situation.

BBC News has not verified the contents of the Pentagon email.

The purported review of the Falkland Islands sovereignty is among various suggested actions in the email, which includes proposals to suspend Spain from NATO due to its strong opposition to the Iran war. However, a NATO official clarified to BBC News that the organization's founding treaty does not allow for suspension or expulsion of any member.

Spain's Prime Minister, Pedro Sanchez, commented, stating, We do not work based on emails. We work with official documents and official positions taken, in this case, by the government of the United States.

The Falkland Islands, located in the south-west Atlantic Ocean, are a British overseas territory embroiled in a sovereignty dispute with Argentina, which claims the islands as the Malvinas. This contentious issue dates back to a brief but intense conflict in 1982 when Argentina invaded the islands, leading to a British military response that ultimately resulted in the islands remaining under UK control.

British forces, dispatched by then-Prime Minister Margaret Thatcher, successfully reclaimed the islands after a 10-week conflict, but the sovereignty dispute with Argentina persists to this day. The situation remains complex and contentious, reflecting broader geopolitical dynamics in the region.

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