Belgium's defense minister expressed concern on Monday about a series of unidentified drone flights over the weekend near a military base where U.S. nuclear weapons are stored, saying they seem to be ...

A number of high-profile drone espionage incidents have alarmed European NATO members—but it is not yet clear which adversary, if any, is responsible. A year ago, a wave of unmanned aerial vehicle ...

As rogue drones close airports, probe nuclear sites and overfly military bases, a steady drumbeat of incidents is exposing ...

Sept. 27 (UPI) --Denmark on Saturday reported more suspicious drones flying above its largest military base, the second time its airspace was violated this week after another group of drones grounded ...