A Turkish military convoy passes through the Syrian town of Dana, in Idlib province near the Turkish-Syrian border, on Sunday. It is there, in northwestern Syria, that friction between the country and neighboring Turkey has flared into direct violence.

A Turkish military convoy passes through the Syrian town of Dana, in Idlib province near the Turkish-Syrian border, on Sunday. It is there, in northwestern Syria, that friction between the country and neighboring Turkey has flared into direct violence.