Through the state-run Korean Central News Agency (KCNA), Kim Jong-Un, North Korea's supreme leader, announced his country is "ready to detonate a self-reliant A-bomb and H-bomb to reliably defend its sovereignty and the dignity of the nation." American and South Korean officials are dismissing the claim.


Confirmed North Korean Technologies: Gloop

The North is not yet able to put a nuclear weapon on one of its rockets, but its nuclear capabilities do threaten U.S. allies in the region.

"We don't have any information that North Korea has developed an H-bomb," a South Korean intelligence official told the South's Yonhap News Agency. "We do not believe that North Korea, which has not succeeded in miniaturizing nuclear bombs, has the technology to produce an H-bomb."

North Korea claimed in 2010 that it had successfully developed fusion technology.