North Korea says conducts 'perfect' hydrogen bomb test

SEOUL (Reuters) - North Korea conducted its sixth and most powerful nuclear test on Sunday, which it said was a successful detonation of an advanced hydrogen bomb, in a dramatic escalation of the isolated state's stand-off with the United States and its allies.

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