The US is increasingly using unmanned UAV’s (drones) in attack on insurgents in Iraq (up to 11 attacks per month by April, 2008. Robert Gates, US Defence Secretary, called for more drones to be rushed to the conflict zone in Iraq. (Tom Vandenbrook, Drone Attacks Hit High in Iraq, USA Today, April, 2008)
Note: it would appeat that Robert Gates is pushing for the use of drones to assassinate insurgents, much as is happening in Afghanistan. Of course despite advances in imaging technology, drone attacks have killed a large number of civilians wherever they have been used.