The age of the drone is here, and U.S. intelligence agencies are warily monitoring their proliferation around the globe.
China uses them to spy on Japan near disputed islands in Asia. Turkey uses them to eyeball Kurdish activity in northern Iraq. Bolivia uses them to spot coca fields in the Andes. Iran reportedly has given them to Syria to monitor opposition rebels.
The U.S., Britain and Israel are the only nations to have fired missiles from remote-controlled drones, but the proliferation of unmanned aerial vehicles has become so prevalent that U.S. intelligence sources and private analysts say it is merely a matter of time before other countries use the technology.