Residents of the Iraqi city of Mosul say a series of airstrikes carried out there in recent weeks by the US-led coalition against the Islamic State could have killed as many as 200 civilians, in what would be the highest civilian death toll in a US-led air campaign since the peak of the Iraq war. Iraqi rescue workers Saturday were combing through the rubble of a building where residents say as many as 137 civilians were killed in a single airstrike last week, in a part of the city now under coalition control, reported the Washington Post