"... even Hezbollah flew four Iranian-made drones against Israel during the 2006 war ..."

In the WSJ/ here

".......Over 40 countries have military-robotics programs today. The U.S. and much of the rest of the world is betting big on the role of aerial drones: Even Hezbollah, the Iranian-backed Shiite guerrilla force in Lebanon, flew four Iranian-made drones against Israel during the 2006 Lebanon War......

... Among the recently deployed technologies that set Israel ahead of the curve is the Guardium unmanned ground vehicle, which now drives itself along the Gaza and Lebanese borders. The Guardium was deployed to patrol for infiltrators in the wake of the abduction of soldiers doing the same job in 2006. The Guardium, developed by G-nius Ltd., is essentially an armored off-road golf cart with a suite of optical sensors and surveillance gear. It was put into the field for the first time 10 months ago.

In the 2006 Lebanon War, Israeli soldiers took a beating opening supply routes and ferrying food and ammunition through hostile territory to the front lines. In the Gaza conflict in January 2009, Israel unveiled remote-controlled bulldozers to help address that issue.......

In such conflicts, robotic vehicles will allow modern conventional armies to minimize the advantages guerrilla opponents gain by their increased willingness to sacrifice their lives in order to inflict casualties on the enemy.

However, there are also fears that when countries no longer fear losing soldiers' lives in combat thanks to the ability to wage war with unmanned vehicles, they may prove more willing to initiate conflict.

In coming years, engineers say unmanned air, sea and ground vehicles will increasingly work together without any human involvement. Israel and the U.S. have already faced backlash over civilian deaths caused by drone-fired missiles in Gaza, Pakistan and Afghanistan. Those ethical dilemmas could increase as robots become more independent of their human masters."