Washington - Special Presidential Envoy for the Global Coalition to Counter Islamic State fighters, Brett McGurk, warned on Sunday that any remaining jihadists in Mosul, Iraq will be killed inside the besieged city. "ISIS is trapped. ... Any of the fighters left in Mosul, they're going to die there," McGurk said in a conference in Baghdad. "So we are very committed to not just defeating them in Mosul, but making sure these guys cannot escape", RT reported. This statement comes as US President Donald Trump announced 1,000 American soldiers are heading to the Middle East to help in the ongoing battle against terrorist group ISIS.