ISIS rounded up and killed 284 people as Iraqi-led coalition forces closed in on Mosul, the terror group's last major stronghold in Iraq, an Iraqi intelligence source said.<br />Nearly 1,000 people have been treated for breathing problems linked to toxic gases from a sulphur plant that Islamic State militants are suspected to have set on fire near the city of Mosul, hospital sources have said.<br />The UN has concern for around 1.5 million civilians believed to be trapped inside Mosul.
