The former head of the Missile Defense Agency who two decades ago oversaw the launch of the current system that provides limited national missile defense against North Korean and Iranian threats says the United States must embrace a space-based missile defense system to keep pace with evolving threats from Russia and China. Retired Air Force Lt. Gen. Trey Obering, who led MDA from 2004 to 2008 and is a Booz Allen Hamilton adviser, said a new fleet of orbiting interceptors...
