The State Department ordered all nonessential U.S. personnel Friday to leave Lebanon, reflecting fears that an American-led strike on neighboring Syria would unleash more bloodshed in this already fragile nation.
The Lebanese government's top security body held an emergency meeting and the Shiite militant group Hezbollah put its fighters on high alert.
Lebanon and Syria share a complicated history and a web of political and sectarian ties and rivalries. The uprising against President Bashar Assad has intensified divisions among Lebanese religious groups as well as polarization among those who support him and those backing the rebels fighting to topple him.
Lebanon has become completely consumed by the civil war next door. Car bombings, rockets, kidnappings and sectarian clashes — all related to the conflict — have become increasingly common in recent months.