ANKARA U.S. Ambassador to Türkiye and Special Envoy for Syria Tom Barrack has stated that Washington owes no obligation to help establish an independent state for the Syrian Democratic Forces (SDF), while openly acknowledging the group's ties to the YPG, the Syrian branch of the PKK terrorist organization. In an interview with CNN Türk, Barrack addressed questions on topics ranging from PKK disarmament to broader U.S.-Türkiye relations. “SDF is YPG. YPG is a derivative of PKK,” Barrack said in