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North Korea 'on collision course' with South

2 April 2013 Last updated at 22:57 BST

North Korea appears to be on a "collision course" with other countries which could lead to war, that's according to the United Nations Secretary General Ban Ki-moon.

His stark warning came after Pyongyang announced it would restart a major nuclear facility, which is capable of producing material for a nuclear weapon.

Damian Grammaticas reports.