Stephen Sackur speaks to Bassma Kodmani, member of the negotiating team of the Syrian opposition. After six years of terrible bloodshed could 2017 dramatically shift the dynamic of the Syria conflict? Change is certainly in the air. Aleppo has fallen to the Assad regime and a ceasefire deal brokered by Russia and Turkey is just about holding. Moscow's dominant role in the diplomatic endgame is now undisputed, with Ankara also playing a pivotal role. Is it time for the moderate rebels to accept their de facto defeat?