When will anti-Islamic State forces retake Mosul?
Despite fierce resistance, Islamic State militants have reportedly been losing ground and equipment in Mosul since Iraqi government forces and US-led air forces launched a major campaign to recapture the city in October 2016 (Iraqi News, The Guardian, Asia Times, Politico).
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Effective 10 July 2017, anti-Islamic State forces have taken Mosul (https://www.reuters.com/article/us-mideast-crisis-iraq-mosul-idUSKBN19V105). This question was closed with "c) Between 1 July 2017 and 30 September 2017".