US President Donald Trump has hinted that the US administration is reviewing its stance on British sovereignty over the Falkland Islands, raising concerns about the special relationship between Washington and London.
Asked at the White House if he was reviewing the US position on the South Atlantic islands, whose sovereignty has long been claimed by Argentina, Trump replied: "I always review every position - it's just one of many."
Officially, the US maintains a neutral stance regarding sovereignty over the Falklands.
However, in practice, Washington recognizes British administration of the territory, which Britain claimed since the late 17th century and has controlled almost continuously since 1833.
The islands became the focus of armed conflict in 1982, when Argentina invaded them. Britain sent a naval task force and, after weeks of fighting, regained control of the territory.
Trump's comments have been interpreted as the clearest signal yet that the US administration may use the Falklands issue as a means of pressuring the government of the new British Prime Minister, Andy Burnham, to increase defense spending and contributions to NATO.
Last week, an unidentified US official told the Telegraph newspaper that Washington could change its stance on the islands if Britain did not meet its military spending commitments.
This statement followed reports that John Healey, the British Chancellor, was preparing to withdraw from a previous commitment to spend 3% of Gross Domestic Product on defense by 2030.
Trump has made increasing military spending by allies a priority of his presidency. He has repeatedly criticized other NATO countries, accusing them of not contributing enough to shared security.
At the NATO summit in The Hague last year, allies agreed to target spending 5% of GDP on defense and security-related spending by 2035.
The possibility of a change in the US stance on the Falklands has been rumored for months. In April, a leaked Pentagon email suggested that Britain's claim to the islands could be reconsidered due to London's lack of support for Trump's decision to go to war with Iran.
A change in American stance would constitute a significant political and psychological blow to Britain.
During the 1982 war, the diplomatic support of then-US President Ronald Reagan was an important factor for Margaret Thatcher's government.
Although the US was also allied with the military junta that ruled Argentina, Reagan positioned himself in support of Britain.
The conflict resulted in the deaths of 649 Argentine and 255 British soldiers, before Argentine forces surrendered in June 1982. The war also played an important role in strengthening relations between Thatcher and Reagan.
Meanwhile, Trump has developed close relations with Argentina's populist president, Javier Milli, who has publicly supported the Argentine claim over the Falklands.
Last year, Trump authorized a $20 billion financial package for Argentina in an effort to help the country weather a financial crisis.
Later, he also authorized imports of Argentine beef into the US, as part of efforts to lower food prices.
The claim to the Falkland Islands, known in Argentina as the Malvinas, remains a sensitive national issue for Buenos Aires. In a 2013 referendum, 1,513 of the 1,517 Falkland Islanders who voted voted in favor of the territory remaining under the United Kingdom.
The issue was also brought back into focus after Argentina's 2-1 victory over England in the World Cup semi-final in July, when several Argentine players unfurled a banner reading "Las Malvinas son Argentinas" - "The Falklands are Argentine."
The Argentine Football Federation was subsequently fined $235,000 by FIFA for violating rules on unsporting demonstrations.