Ali Khamenei denounces killing of innocent people in Boston, but also criticizes US use of unmanned drones.
Robots will fight wars of the future.
The X-47B drone begins sea trials.
The president now concedes stepped-up drone use in Afghanistan, Pakistan, and Iraq. The ACLU is suing, seeking more transparency from the administration.
CIVIC found that civilian casualties in Pakistan were significant, even greater than those in Afghanistan.
Remote warfare comes home to the cineplex.