Russian military has been jamming U.S. military drones in Syria

The Russian military has seriously affected American operations by jamming US military drones operating in Syria, NBC reported on Tuesday.
After a series of suspected chemical weapon attacks, Russia started jamming some US drones, concerned they might be used to retaliate.
Officials explained that the GPS system of the drones was blocked, which is relatively easy but could inflict serious harm, causing them to malfunction or even crash, NBC reported.