text: U.S. Says N.Korea Blast Probably Not Nuclear  SEOUL (Reuters) - A huge explosion rocked North Korea last  week but U.S. and South Korean officials said on Sunday it was  unlikely to have been a nuclear weapons test despite the  appearance of a "peculiar cloud" over the area.
inputs: U.S. Says N.Korea Blast Probably Not Nuclear  SEOUL (Reuters) - A huge explosion rocked North Korea last  week but U.S. and South Korean officials said on Sunday it was  unlikely to have been a nuclear weapons test despite the  appearance of a "peculiar cloud" over the area.