 The relationship was strengthened when the French President, Mitterrand, ordered the French intelligence services to assist Britain in the Falklands conflict.France helped track an Argentine ship that was thought to be attempting to obtain additional French-made Exocet missiles.The most important ELINT and radar MASINT cooperation between Britain and France was detailed radar information on the French Exocet anti-shipping missile, which had already sunk "HMS Sheffield" and threatened other ships.