Diplomats said Turkey's opposition to any NATO intervention in Libya stalled the approval of plans to launch aerial patrols over Libya to prevent the government air force from attacking civilian targets, which were drawn up by NATO's military staff.
Both actions will require a separate "execute directive" by the North Atlantic Council, which requires the consensus of all 28 alliance members. Diplomats said this could be issued on Tuesday at the earliest.
NATO members France, Britain and the United States have been carrying out strikes on Libyan targets since Saturday. But they have acted as individual nations rather than members of the alliance.