Defense Secretary Ash Carter has announced another offensive will soon begin—this time to take the city of Raqqa, Syria, which is seen as the de facto capital of the Islamic State. This comes as U.S. and Iraqi forces are planning the next stage in the fight to retake the city of Mosul. The United Nations Children’s Fund is warning that as many as 1.5 million people may be affected by the fight to recapture Mosul, half of them children. And humanitarian workers say some 200,000 people may need shelter during the offensive.