The close bond between Margaret Thatcher and Ronald Reagan was almost broken over the US invasion of the Caribbean island of Grenada in 1983.
Official documents released by the National Archives reveal the then-US President only informed Downing Street of the plan the night before troops moved in.
Mrs Thatcher said she was "deeply disturbed" by the military action.
More top news
The SNP supporters who voted against independence, and nine more interesting snippets from Lord Ashcroft's unofficial "exit poll".
Jimmy Sinclair, who has waited his whole life to vote for independence, told us he was "disappointed" after the 'No' vote.
Photos from an historic day in Scotland's history as voters choose to remain part of the United Kingdom.