Several countries, including the United States are turning to robot technology to protect their borders. Not only will unmanned vehicles and aircraft to patrol the borders, but also to shoot at people crossing borders illegally. These drones will often operate without human intervention, killing intruders on land, from the air, or even in coastal waters using unmanned patrol boats. So far, the technology is in place in the United States, the European Union, South Korea, Iran and Israel.
Full Story: Countries Look to Robot Armies for Border Defense