Ukrainian President Petro Poroshenko said renewed efforts to cement a cease-fire in eastern Ukraine appeared to be taking hold.
Mr. Poroshenko and separatist leaders said this week that forces from both sides would observe a so-called “quiet period” starting Sept. 1. It is the latest push, backed by France and Germany, to stop fighting in the two-year conflict between government troops and separatists and Russian forces and comes after clashes along the front line increased this summer.