In latest test, North Korea detonates its most powerful nuclear device yet
TOKYO — North Korea sharply raised the stakes Sunday in its standoff with the rest of the world, detonating a powerful nuclear device that it claimed was a hydrogen bomb that could be attached to a missile capable of reaching the mainland United States.
North Korea Says It Tested a Hydrogen Bomb Meant for Missiles
Trump rebukes South Korea after North Korean bomb test
North Korea's sixth nuclear test was more than a slap in the face to President Trump. It also sent a signal to China