The Lebanese army sent commandos to the tense border area with Syria on Monday, bracing for another spillover of the conflict next door as Syrian rebels continued to flee into Lebanon after the fall of their stronghold to President Bashar Assad’s forces.

Since Yabroud fell on Sunday, Lebanon has been on edge. Syrian rebels have been fleeing into the Lebanese Sunni-dominated town of Arsal, which is surrounded by Shiite villages that are guarded by Hezbollah militants.

Lebanese troops, including commandos in beige, desert-style army uniforms, were seen patrolling the rugged, hilly border area on foot on Monday, fingers on the trigger of their automatic rifles. […]