SEOUL, South Korea (AP) — North Korea said it set off a hydrogen bomb Sunday in its sixth nuclear test, which judging by the earthquake it set off appeared to be its most powerful explosion yet. South ...

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 ...

North Korea released a statement early Wednesday asserting that they have successfully tested a hydrogen bomb, “a measure for self-defence the DPRK has taken to firmly protect the sovereignty of the ...

Javascript is required for you to be able to read premium content. Please enable it in your browser settings. A senior North Korean official has issued a stern ...

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 ...