by the United Nations, United Nations Security Council Resolution 757
“ Decides that all States shall: (a) Deny permission to any aircraft to take off from, land in or overfly their territory if it is destined to land in or had taken off from the territory of the Federal Republic of Yugoslavia (Serbia and Montenegro) , unless the particular flight has been approved, for humanitarian or other purposes consistent with the relevant resolutions of the Council, by the Committee established by resolution 724 (1991) ”
