Iraqi forces and Kurdistan Peshmerga forces with the support of U.S advising forces and U.S coalition airstrikes had launched the biggest assault to retake Iraq second biggest city from Islamic State group. The operation is made of about 30,000 strong Iraqi and Peshmerga forces. President of Iraq Kurdish region president Massoud Barzani said the Peshmerga had taken 200 km of territory from Islamic State within few hours of operations and commander said they have cleared several villages. The U.S said 5000 strong America forces are in Iraq foe advisory role to Iraq and Pesherga forces. Qatar based news network, Aljazeera reported on Saturday 22nd October, 2016 tha U.S forces in Iraq are wearing after a chemical factory was reported blew off by Islamic State fighters .According to the report one thousand people have been admitted to hospital after inhaling the smell from the burning chemical factroy reported to have blew off by Islamic State in South of Mosul.