ISIS is planning to kill thousands of people by sending drones delivering radioactive material over Western cities—or so British Prime Minister David Cameron warned last week at a summit on nuclear terrorism in Washington. Rather than carrying a "dirty bomb" to disperse material with explosives, the drones would work like toxic crop sprayers—"dirty drones" perhaps—and cause thousands of casualties. The British PM urged other world leaders to consider urgently how they would counter this new threat. Could the terrorist organization actually launch such an attack? To appreciate the issue, you have to know a few things about drones and dirty bombs. Read more here - Could ISIS Attack the West With a Dirty Drone?