Iraqis are celebrating the liberation of Mosul from Islamic State group militants after three years of occupation. But the retaking of Iraq's second city comes at a very high cost: Many lives have been lost and trust has been broken between the Sunni, Shiite, Kurdish and Yazidi communities. FRANCE 24 looks at how one of the world's oldest cities can rebound, and what role Baghdad will play. Produced by Michele BARBERO, Alessandro XENOS, Christopher DAVIS.