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 ...

The UN Security Council has tentatively set an emergency meeting after North Korea’s H-bomb test.2:10 p.m. Crowds dressed in thick winter coats have gathered outside a large video screen near a ...

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 ...

TOKYO -- North Korea announced it detonated a thermonuclear device Sunday in its sixth and most powerful nuclear test to date, a big step toward its goal of developing nuclear weapons capable of ...

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 ...