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Obama warns North Korea against missile test launch

25 March 2012 Last updated at 14:52 BST

US President Barack Obama has warned North Korea that it will "achieve nothing by threats or by provocations".

The warning comes as Pyongyang prepares to launch a long-range missile which it says will put a satellite in orbit.

Mr Obama was speaking after talks in Seoul with South Korean President Lee Myung-bak, ahead of global summit on nuclear security.

Damian Grammaticas reports from Seoul.