Meanwhile...

BBC NEWS | Asia-Pacific | North Korea claims nuclear test: "North Korea says it has carried out its first test of a nuclear weapon.

It said the underground test, carried out in defiance of international warnings, was a success and had not resulted in any leak of radiation.

The US said intelligence had detected a seismic event at a suspected test site and Russia said was '100% certain' a nuclear test had occurred.

The US said the reported test was a 'provocative act', while China denounced it as 'brazen'."