The Falkland Islands will be back under Argentine control within "20 years", the country's foreign minister Hector Timerman has said.
On a visit to London, he claimed "not one" other nation supported UK sovereignty of the Falklands.
Speaking to the Guardian and Independent, Mr Timerman said Britain had "occupied" the islands for "access to oil and natural resources".
A referendum on the Falkland Islands political status will be held in March.
Mr Timerman was meanwhile confronted by elected representatives of the Falkland Islands in the House of Commons Lobby on Tuesday.
The foreign minister refused to accept a letter about the future of the Islands or to talk to the representatives.