Hillary Clinton has offered to help Argentina and Britain resolve the dispute over the Falkland Islands.
The US Secretary of State said America would not get involved in the dispute itself but was ready to mediate.
Mrs Clinton said the United States was willing to be a go-between if it would help resolve differences which have resurface due to British plans to drill for oil in the region.
"It is our position that this is a matter to be resolved between the United Kingdom and Argentina," she said. "If we can be of any help in facilitating such an effort, we stand ready to do that."
President Cristina Kirchner of Argentina is expected to ask Mrs Clinton to put pressure on Britain to discuss the Falklands Islands when the pair meet in Buenos Aires on Monday night.
Mrs Clinton made a brief trip to the Argentine capital to meet the Argentine president, a personal friend of the Clintons, at the beginning of a week-long tour of Latin America.
Barack Obama has been criticised in Britain for assuming a neutral position in the renewed tensions with Argentina after a UK oil rig began drilling last week in disputed waters off the north coast of the South Atlantic islands.
Spain, currently holding the European presidency, said the European Union should not become involved in the Falklands dispute. To read full London Telegraph story — Go Here Now.
© Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.