Science group warns of shortcomings in U.S. missile defence

By David Alexander WASHINGTON (Reuters) - The U.S. missile defence system to counter attacks from rogue states like North Korea has no proven capability to protect the United States and is not on a credible path to achieve that goal, a science advocacy group said on Thursday. The ground-based midcourse missile defence system, which has deployed 30 interceptors in Alaska and California, has been tested under highly scripted conditions only nine times since being deployed in 2004, and failed to de