BEIRUT — An open-ended cease-fire in southern Syria brokered by the United States, Russia, and Jordan came into effect on Sunday at noon.
The agreement, announced Thursday after a meeting between President Trump and Russian President Vladimir Putin, is the first initiative by the Trump administration in collaboration with Russia to bring some stability to war-torn Syria.

It followed weeks of secretive talks in the Jordanian capital, Amman, to address the buildup of Iranian-backed forces, in support of the Syrian government, near the Jordanian and Israeli borders.