Prime Minister David Cameron last night confronted Argentina’s president over the Falklands, as the two met at the G20 summit in Mexico.
Cristina Fernandez de Kirchner attempted to hand Mr Cameron a package marked UN – Malvinas but he refused to accept it.
He told her she should respect the decision of the islanders on their future in a referendum next year.
Relations between Britain and Argentina are in the deep freeze after Buenos Aires tried to use the 30th anniversary of the Falklands War to revive its claim on the islands.
Britain has rejected calls made by Ms Kirchner to the UN decolonisation committee for direct talks to discuss the future of the disputed territory in the south Atlantic.
The tension between the countries has been ramped up during this week’s summit after Mr Cameron singled out Argentina for criticism for its protectionist policies.
Downing Street aides said the Prime Minister sought out Ms Kirchner to make Britain’s position on the Falklands clear.
Mr Cameron said: “I am not proposing a full discussion now on the Falklands but I hope you have noted that they are holding a referendum and you should respect their views.
“We should believe in self-determination and act as democrats.”
Aides said Mr Cameron gave a “clear and calm message”.