Congressman wonders about Kim Jong Un's 'stability'

WASHINGTON (AP) - The chairman of the House Intelligence Committee says the U.S. just doesn't know about "the stability" of North Korea's young leader, who has threatened preemptive nuclear attacks on Washington.

Republican Rep. Mike Rogers of Michigan says Kim Jong Un is trying to "prove himself" to his military and the military is eager for "saber-rattling" for its own self-interest.

North Korea also has said recently that it no longer will recognize the armistice that ended the 1953 Korean War.

The Pentagon said Friday that it will spend $1 billion to add 14 interceptors to an Alaska-based missile defense system, responding to what it called faster-than-anticipated North Korean progress on nuclear weapons and missiles.

Rogers tells CNN's "State of the Union" that the North Koreans seem to be looking for some "provocations."