Iraqi Prime Minister Haider al-Abadi has announced the start of an offensive to recapture the northern city of Mosul from ISIS. Mosul has been ISIS's largest stronghold in Iraq since June 2014. Ahead of the start of the operations, the Iraqi military dropped thousands of leaflets over Mosul, calling on residents to stay away from militant hideouts and not to trust false information. The UN is building refugee camps in northern Iraq as it estimates 700,000 people in the area will need support and assistance. It is said that if Iraqi troops, with the US-led coalition backing, recapture the city, it will be a major blow to so-called Islamic State.