 Complete the following phrase:  On 2 April 1982, the ruling military junta in Argentina ordered the invasion of the British possessions of the Falkland Islands and South Georgia, triggering the Falklands War. The subsequent crisis was a defining moment of premiership. At the suggestion of Harold Macmillan and Robert Armstrong, she set up and chaired a small War Cabinet formally called ODSA, Overseas and Defence committee, South Atlantic to oversee the conduct of the war, which by 56 April had authorised and dispatched a naval task force to retake the islands. Argentina 