North Korea today revealed it had detonated a hydrogen bomb, triggering a 5.1-magnitude earthquake and propelling the dictatorship on a new collision course with world powers.
The thermonuclear weapon is believed to have detonated into the atmosphere at 10am local time at the Punggye-ri test site in the north-east of the country, with tremors felt many miles away.
Footage was aired on state television that purported to be of the explosion, showing a thick, black mushroom cloud rising high into the air.









