Adopted 19 March 1978 by the UN Security Council on the initiative of the United States, following the Israeli invasion of Lebanon on 14 March, this resolution "1. Calls for strict respect for the territorial integrity, sovereignty and political independence of Lebanon within its internationally recognized boundaries; 2. Calls upon Israel immediately to cease its military action against Lebanese territorial integrity and withdraw forthwith its forces from all Lebanese territory; 3. Decides . . . to establish immediately under its authority a United Nations interim force for southern Lebanon for the purpose of confirming the withdrawal of Israeli forces, restoring international peace and security and assisting the Government of Lebanon in ensuring the return of its effective authority in the area. . ."