The North Korean authorities say they have successfully tested a hydrogen bomb amid reports of a tremor near the main nuclear test site.State media announced the test after monitors detected a 5.1 magnitude quake close to the Punggye-ri site.The North is thought to have conducted three previous underground nuclear tests there since 2006.A hydrogen bomb uses fusion to create a blast far more powerful than that of a more basic atomic bomb.In a surprise announcement a newsreader on North Korean state TV said: “The republic’s first hydrogen bomb test has been successfully performed at 10:00 am on January 6, 2016.”Last month, North Korean leader Kim Jong-un said Pyongyang had developed a hydrogen bomb, although international experts were Doubt.
Earth Quake in North Korea.
