North Korea Hints Developed Thermonuclear Bomb

North Korean leader Kim Jong-Un has suggested his nuclear-armed state has developed a hydrogen bomb, a move that would signal a major step forward in its nuclear weapons capabilities.

During a recent inspection tour of a historical military site, Kim mentioned that North Korea was already a "powerful nuclear weapons state ready to detonate self-reliant A-bomb and H-bomb to reliably defend its sovereignty", the North's official KCNA news agency said Thursday.

North Korea has already tested three atom bombs, which rely on nuclear fission.

A hydrogen, or thermonuclear device, uses fusion in a chain reaction that results in a far more powerful explosion.

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I think its doubtful and so do the experts.