The Pentagon is beefing up the nation’s missile defense in the wake of provocative nuclear threats from North Korea and is set to deploy 14 additional ground-based interceptors at missile silos in Alaska and California, congressional and U.S. officials tell Fox News.

The extra interceptors on the West Coast, designed to counter attacks from an intercontinental ballistic missile, would bring the total number of interceptors to 44, a plan originally proposed by the Bush administration. President Obama stopped the deployment of the additional interceptors when he took office in 2009, leaving the total number at 30.

Congressional sources claim that by stalling the original plan and forcing the military to bring back on line silos that otherwise would have been operational, the Obama administration has effectively wasted millions in taxpayer’s dollars.

It’s a sentiment that is not likely to sit well with conservative lawmakers when the plan is announced on Monday, particularly as they seek new austerity measures.

A senior Pentagon official hinted at the decision Tuesday in a speech to the Atlantic Council in Washington just days after Pyongyang threatened a “pre-emptive” nuclear strike on the United States.

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“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 ICBM,” James Miller, undersecretary of Defense for policy, said.

Upon completion of Missile Field Number One at Fort Greely, Alaska, Miller said, “we have the ability to swiftly deploy up to 14 additional ground-based interceptors if needed.” In addition to Fort Greely, current interceptors are set up at Vandenberg Air Force Base in California.

Missile Field Number One was one of the areas where the Obama administration stopped construction in 2009. Congressional sources say it will cost at least $205 million to bring that missile field up to speed, more than it would have cost four years ago. These officials say the price of the missiles themselves also has increased.

An Obama administration official tells Fox News that the increase in interceptors is a logical response to an evolving threat from North Korea and that “anyone who suggests we should have stayed the course” with the Bush administration’s plan is engaging in “Monday morning quarterbacking.”

This official says the North Korean threat is much different from what it was in 2009. Along with the continued testing of nuclear weapons and longer-range delivery systems, the North Koreans have advanced their mobile missile capability, even within the last six to eight months.

“What we were defending against (from North Korea) four years ago was a single rogue missile, now with the mobile missile developing you have got to be able to counter multiple missile threats … so you have to expand your capability.”

Whether intentional or not, the announcement also coincides with 30th anniversary of President Ronald Reagan’s Strategic Defense Initiative speech. The nation’s first ground-based interceptors were set up in 2002 under President George W. Bush.