Imagined attack on Capitol Hill in Washington
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North Korea posts imaginary 'missile attack' on Washington

20 March 2013 Last updated at 03:41 GMT

North Korea has posted a video on YouTube of what appears to be an imagined missile attack on US government buildings in Washington, including a simulated explosion of the Capitol's dome.

Relations remain tense between Pyongyang and Washington after a North Korean nuclear test last month.

Lucy Williamson reports.