In 2011, the Pentagon mothballed Missile Field 1, acting on direction from the Obama administration. Instead of permanently decommissioning it, the Defense Missile Agency placed it in a non-operational state.
Pentagon officials testified at a budget hearing at the time that hardening and reactivating the six silos in Missile Field 1 would take two years and cost approximately $200 million. Pentagon officials testified then that "there are no current threats dictating the need, nor plans to reactivate MF-1 in the future."
Republican congressional sources told CNN that they argued against the move.
"North Korea was doing all sorts of things we couldn't talk about publicly back then," said one GOP congressional official who is privy to intelligence briefings. "The intelligence did not change. This is right where we expected North Korea to be. It takes about two years to order and take delivery of a new interceptor. That's why you have to be ahead of the threat."
In his State of the Union address last month, Obama said the United States would "stand by our allies, strengthen our own missile defense and lead the world in taking firm action in response to these threats."
Last week, Miller told the Atlantic Council that "North Korea's shrill public pronouncements underscore the need for the U.S. to continue to take prudent steps to defeat any future North Korean" intercontinental ballistic missile.