North Korea enters in a state of war against South Korea after the flew of U.S. B-2 bombers 3003131.

The statement, issued jointly by the DPRK government, party and other organizations, warned that any military provocation near the land or sea border of the two sides would result "in a full-scale conflict and a nuclear war".

The two Koreas have been technically in a state of war for six decades under an armistice that ended their 1950-53 conflict. Despite its threats few people see any indication Pyongyang will risk a near-certain defeat by re-starting full-scale war.

North Korean leader Kim Jong-un yesterday signed off on an order putting its missile units on standby to attack US military bases in the South and the Pacific, after the United States flew two nuclear-capable stealth B-2 bombers over the Korean peninsula in a rare show of force.

US officials said the B-2 bombers were on a diplomatic sortie aimed at reassuring allies South Korea and Japan and were also aimed at trying to nudge Pyongyang back to dialogue, although there was no guarantee Kim would get the message as intended.