Ahmet Davutoglu told Reuters a robust international strategy including "real intelligence cooperation" and withdrawal of all foreign fighters was needed to end the conflict and help millions of Syrians devastated by violence.
The crisis was "a threat to all", he said in an interview, pointing to what he called the totalitarian nature of the Assad government and the presence of al Qaeda-linked armed groups.
He added that Damascus had in effect colluded with the militant rebel groups to fight moderate opposition factions. Syria has not responded to similar charges made in recent weeks and says it is leading international efforts against terrorism. (Reuters)