Iraqi people gathered and danced at Tahrir Square in the capital Baghdad on Sunday to celebrate the "liberation" of Mosul. /CFP

Prime Minister Haider al-Abadi announced the "liberation" of Mosul on Sunday. The victory means ISIL has lost its final major stronghold in Iraq. /CFP

Mosul, located in northern Iraq, came under ISIL control in June 2014. /CFP

The offensive has turned much of the city to rubble and forced thousands of people to flee their homes. /CFP