A main road in the provincial capital of Quneitra in southern Syria was blocked with mounds of dirt, fallen palm trees and a metal pole that appeared to have once been a traffic light. On the other side of the barriers, an Israeli tank could be seen maneuvering in the middle of the street.

Israeli forces entered the area — which lies in a U.N.-patrolled buffer zone in the Golan Heights that was established by a 1974 ceasefire agreement between Syria and Israel — soon after the fall of President Bashar Assad last month in the country's 13-year civil war.