Margaret Thatcher and Ronald Reagan
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Margaret Thatcher: 'A woman in a man's world'

8 April 2013 Last updated at 22:53 BST

The BBC's John Simpson looks at Baroness Thatcher's relationships with foreign leaders during her time in power.

Lady Thatcher was Conservative prime minister from 1979 to 1990. She was the first woman to hold the role.

She died "peacefully" at the age of 87 after suffering a stroke.