Margaret Thatcher (right) lobbied then-US President Ronald Reagan (left) to prevent Argentina from rearming just half a decade after the Falklands War when Argentina invaded the Island.
Argentine forces targeted ships including HMS Sheffield (pictured after it was hit) with the French-made guided missiles during the 1982 conflict with Britain.
Mrs Thatcher demanded that Francois Mitterrand hand over information that could disable the French-made Exocet missiles (pictured), according to a 2005 book by a confidante of the president.