Syria acted decisively to stop the chaos in West Beirut, and it seized the opportunity to reimpose its hegemony over the areas in Lebanon from which it had been evicted by Israel in 1982. On February 22, 1987, it dispatched 7,500 troops, configured in two brigades and a battalion, from eastern Lebanon. The Syrian troops, most of whom were veteran commandos, closed down some seventy militia offices, rounded up and arrested militia leaders, confiscated arms caches, deployed troops along the major roads and at Beirut International Airport, established checkpoints, and sent squads on patrol in the streets.[1]