(FILES) This file photo taken on May 25, 2016 shows men in uniform identified by Syrian Democratic forces as US special operations forces as they ride in the back of a pickup truck in the village of Fatisah in the northern Syrian province of Raqa. US special operations forces photographed in Syria wearing the insignia of Kurdish troops considered terrorists by Turkey have been ordered to remove the patches, a military spokesman said May 27, 2016. Ankara accused the United States, a NATO ally, of "unacceptable" behavior for such an overt display of support for the Kurdish People's Protection Units (YPG). / AFP PHOTO / DELIL SOULEIMAN