Recent deadly violence between Alawis and Sunnis in Tripoli, Lebanon, is raising fears of full-scale Sunni-Shiite war in the country. But Lebanon is not at the cusp of civil war, because if there is a consensus on anything among its quarreling parties, it is their rejection of a new war.
Weapons, money and will are needed to start a war. The only party in Lebanon with sufficient weapons and money is Hezbollah, but a civil war is not in its interest.