As world powers fail to set a date for the Geneva peace conference, we ask who could end the Syrian civil war. To discuss this, Inside Syria presenter Jane Dutton is joined by guests: Hussein Shobokshi, a columnist at Asharq Alawsat, an international Arabic newspaper; Rim Turkmani, a member of the political office of Building the Syrian State - a political movement that calls for a democratic transition in the country; and Mohammad Marandi, an associate professor of North American Studies at the University of Tehran.