The Defense Department should consider expanding current national missile defense policy -- which is focused on threats from North Korea and, should Tehran obtain a long-range nuclear capability, Iran -- to also counter a "limited" attack on the United States by Russia or China, the general nominated to oversee homeland missile defense told lawmakers today. Lt. Gen. Gregory Guillot, nominated to be the next dual-hatted chief of U.S. Northern Command and North American Aerospace Defense Command, told the Senate Armed...