North Korea has warned foreign embassies in Pyongyang that it cannot guarantee their safety from the threat of conflict after 10 April, and has advised them to consider pulling their staff out of the capital. This follows North Korea blocking South Korean Workers from the Kaesong industrial complex - a sign that this might be more material than the usual posturing, warning that a 'moment of explosion' is nearing and moving missiles with "considerable range" to its east coast. Though the US is playing down the threat and the UK and Russia have no plans of moving their diplomats the possibility of an accident or miscalculation leading to war looms. North Korea has earned the reprobation of Russia and Fidel Castro in recent days and even longtime supporter China is beginning to lose patience with it - something some say is not before time.
Air samples over North Korea show no radiation "It is possible there was no radiological data. That could be the case if: the North Koreans successfully sealed the site; it was such a small detonation and so deep underground there was no escape of nuclear debris; or the test was actually conventional explosives."