Iraqi army Humvees race toward the front lines on the outskirts of Ramadi during heavy clashes with Islamic State group militants in this September 12, 2015, file photo. The fighting eventually led to the recapture of the city from the extremists. After the massive destruction wreaked on Ramadi, Iraqi and coalition officials are rethinking tactics as they prepare for an assault to retake the biggest IS-held prize, the northern city of Mosul. (Photo by AP Photo)
