US Secretary of State Hillary Clinton on has asked her Turkish Counterpart Ahmet Davutoglu, who plans to visit Syria, to convey a clear message to Syria demanding the immediate return of troops to their barracks. State Department spokesman Mark Toner said that Clinton discussed during a telephone conversation with her ??Turkish counterpart the situation in Syria. He added that Clinton asked Davutoglu to convey a message to Syria demanding the return of its soldiers to their barracks and the release of all prisoners and reiterated US support for a transition to democracy in Syria.