North Korea conducts sixth nuclear test, says developed H-bomb

SEOUL (Reuters) - North Korea said it successfully tested an advanced hydrogen bomb on Sunday, marking a dramatic escalation in the isolated state's stand-off with the United States over its nuclear weapons programme.

from Reuters: Top News http://uk.reuters.com/article/uk-northkorea-nuclear/north-korea-conducts-sixth-nuclear-test-says-developed-h-bomb-idUKKCN1BD0VY?feedType=RSS&feedName=topNews