FILE - In this Feb. 14, 2020, file photo, Turkish troops and artillery prepare to enter Syria, in Reyhanli, Hatay, Turkey. Syria’s civil war has long provided a free-for-all battlefield for proxy fighters. But in its ninth year, the war is drawing major foreign actors into direct conflict, with the threat of all-out confrontations becoming a real possibility. (AP Photo, File)
Turkey says its forces retaliated with artillery and air attacks against Syrian government targets. AP

Syria: At least 33 Turkish soldiers killed in regime air strike