Turkey said it retaliated Monday after “intense” shelling by Syrian forces killed five of its soldiers and wounded five others in Syria’s northern Idlib province, a marked escalation a week after a similarly deadly clash between the two sides.
Turkey’s president is to meet Russian President Vladimir Putin this week in talks crucial to the outcome of Turkey’s latest incursion into northern Syria , and to the broader Syrian war.
The United States warned it would take “firm and appropriate measures” to protect a cease-fire in southern Syria if President Bashar Assad’s forces move against rebels there.