With only a few hundred ISIS fighters left (who have said they will fight to the death), Prime Minister al-Abadi arrived Sunday to congratulate his army in winning the city, now significantly deserted and smashed by explosives after 9 months of combat.
Although ISIS as a unified force in Mosul is defeated, there will be ongoing troubles with sleeper cells and suicide bombings. The army also still has to clear out the city of booby-trap explosives left by the extremist military organization.
ISIS still holds smaller cities to the south of Mosul, and the battle for these parts of Iraq will continue. Also, the US-led coalition continues to fight the group in Raqqa, Syria.