Can we stop killer robots?

Killer robots may sound like the name of a science fiction film, but they could be becoming a reality - and soon. Scientists say artificial intelligence has developed so quickly that we could soon see weapons that can choose a target and kill without being controlled by a human. The United Nations has held five days of talks in Geneva, Switzerland on banning what are known as lethal autonomous weapons. But the United States, Russia, Israel and the United Kingdom are against any restrictions, saying these developments could make war safer. How likely are killer robots?