Iraqi Prime Minister Nour al-Maliki is urging the United States to deliver more advanced weaponry, but ISIS fighters have already been seen riding round in U.S.-supplied Humvees in other areas they control, and much of the weaponry captured in this latest battle is likely to be American, experts say. Below are just a few of the images circulating around the web showing ISIS fighters with U.S. military gear following the operation in Mosul. These have not been independently verified.