Initial test results suggest that an explosion in North Korean was not a hydrogen bomb, as the state government there has claimed, U.S. officials told ABC News. The initial determination of the tests, ...

The White House says the U.S. government's early analysis of underground activity in North Korea "is not consistent" with that country's claim of having conducted a successful hydrogen bomb test.

Donald Trump has called North Korea a 'rogue nation' after it conducted a hydrogen bomb test This is after the secretive state announced the "perfect success" of a hydrogen bomb test Japanese ...

SEOUL, South Korea — North Korea says it has conducted a hydrogen bomb test. The surprise announcement that complicates already difficult efforts to curb the country's push for a working nuclear ...

In its sixth nuclear test, North Korea said it was "successful" in loading a hydrogen bomb onto an intercontinental ballistic missile. President... North Korea Claims Successful Hydrogen Bomb Test ...

SEOUL, South Korea -- North Korea said today it had conducted a hydrogen bomb test, a defiant and surprising move, if confirmed, would put Pyongyang a big step closer to improving its still-limited ...

SEOUL, South Korea (AP) – North Korea says it has conducted a hydrogen bomb test. The surprise announcement that complicates already difficult efforts to curb the country’s push for a working nuclear ...

SEOUL/WASHINGTON (Reuters) - North Korea on Sunday conducted its sixth and most powerful nuclear test, which it said was of an advanced hydrogen bomb for a long-range missile, prompting the threat of ...

SEOUL (Reuters) - North Korea said on Sunday it has successfully tested a hydrogen bomb designed to be mounted on its newly developed intercontinental ballistic missile, producing a greater yield than ...