Turkish military forces captured 18 Syrian government soldiers in northeastern Syria, Turkey’s defense minister said Thursday, in one of the most dramatic examples of an increasingly muddled battleground following the withdrawal of U.S. forces from the area. Turkish Defense Minister Hulusi Akar said the soldiers were captured during Turkish reconnaissance operations southeast of Ras al-Ayn but didn’t say when. Turkey agreed to a cease-fire brokered by Russia in which Kurdish fighters would withdraw 30 kilometers (19 miles) away from the Turkish border.