
By Jake Tapper and Jennifer Rizzo
Imagine the North Korean regime has toppled, either because the U.S. or South Korea take it out, or because of a coup, and the U.S. has to surge troops to secure the country's nuclear stockpiles to make sure they do not fall into the wrong hands.
The frightening scenario was played out at the U.S. Army War College recently, and it did not end well. The military sets the scene in the fictitious land of "North Brownland," essentially an alias for North Korea.
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Defense Secretary Chuck Hagel quoted President Dwight D. Eisenhower Wednesday, telling rising military officers "the wise and prudent administration of the vast resources required by defense calls for extraordinary skill."
In his first major policy speech since taking over the Pentagon, Hagel focused on the budget problems facing the Defense Department and the rest of the government.
"A combination of fiscal pressures and a gridlocked political process has led to far more abrupt and deeper reductions than were planned for or expected. Now DoD is grappling with the serious and immediate challenge of sequester - which is forcing us to take as much as a $41 billion cut in this current fiscal year," Hagel said at the National Defense University at Fort McNair.
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By Jethro Mullen and Chelsea J. Carter
The United States will not accept North Korea as a "nuclear state," Secretary of State John Kerry warned on Tuesday, just hours after Pyongyang announced plans to restart a nuclear reactor it shut down five years ago.
North Korea's decision comes as tensions on the Korean peninsula escalate over Kim Jong Un's threats to wage war against the United States and South Korea.
"The bottom line is simply that what Kim Jong Un is choosing to do is provocative. It is dangerous, reckless. The United States will not accept the DPRK (Democratic People's Republic of Korea) as a nuclear state," Kerry said during a joint briefing in Washington with South Korea Foreign Minister Yun Byung-se.
"And I reiterate again the United States will do what is necessary to defend ourselves and defend our allies, Korea and Japan. We are fully prepared and capable of doing so, and I think the DPRK understands that."
By Jill Dougherty and Pam Benson
More than a month after North Korea tested a nuclear device, the United States is unable to pinpoint whether the regime was able to use uranium to fuel the explosion, a capability that would represent a significantly enhanced nuclear program.
The lack of clarity comes as North Korea ratchets up its bellicose rhetoric each day.
New video broadcast on North Korean television showed the nation's leader, Kim Jong Un, addressing his troops along the border on Monday and issuing a blood-chilling threat, "Throw all enemies into the caldron, break their waists and crack their windpipes." It was the same location he and his late father visited in November 2010, just two days before the North shelled an island, killing four South Koreans.
The bellicose comments have been intensifying over the past months, increasing worry about Kim's unpredictability.
A defiant North Korea is threatening both the United States and South Korea in response to the United Nations decision to invoke additional sanctions on Pyongyang for it's rocket launch late last year.
Calling the U.S. a sworn enemy of North Korea, the government of Kim Jong Un vowed to launch more missiles and conduct a nuclear test.
Pentagon correspondent Barbara Starr looks into how dangerous the North's nuclear capability really is.

By Pam Benson
Satellite imagery of a North Korean nuclear test site identifies what could be key installations that would likely play a prominent role if Kim Jong Un orders a test, which the government threatened to do on Thursday.
The analysis of the Pung-gye-Ri Nuclear Test site by U.S.-Korea Institute at Johns Hopkins University’s 38 North blog shows recently completed structures essential to an underground nuclear weapons test.
One is believed to be a command and control bunker. Another photo shows what appears to be a radio relay system that zigzags through a valley, which the 38North analysts believe could be used as part of a communications system linking the bunker to the North Korean leadership in Pyongyang.
Why sticks won't work with North Korea
"Located about 150 meters (164 yards) north of the test tunnel entrance, the bunker, used only when a test is about to be conducted, would contain equipment for controlling the nuclear device, managing instruments for gathering test data and communicating with authorities in Pyongyang," the report stated. "The bunker would also provide shelter for all personnel in the area."

