ISIS drones disrupt US-backed Iraqis’ fight for Mosul

On the outskirts of Mosul, Iraqi forces backed by the U.S. military are slowly taking ground from the Islamic State of Iraq and Syria, or ISIS.
This past week, they retook the airport and started pushing deeper into Iraq’s second largest city.
Day Seven of the battle for western Mosul and the Iraqis — by their own account — are moving very slowly. Their operations are being disrupted by ISIS drones, sometimes operating in swarms of three to five. They are off-the-shelf qua