North Korea has nuclear weapons besides also hydrogen bombs.
When the South Korean intelligence Kim's claim is however not believed, Yonhap news agency reported from Seoul. North Korea would not have the technology to make the bomb. It may be that North Korea there trying to make.In 1952, Americans spent the first hydrogen bomb detonated in the Pacific Ocean. With a force of 10 megatons of TNT bomb had more power than all the Allied bombs from World War II together.