Obama speaks at summit in Seoul aimed at reducing the risk of nuclear terrorism.
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Obama seeks 'a world without nuclear weapons'

US President Barack Obama says he is pushing for "a world without nuclear weapons", making direct appeals to North Korea and Iran.

He also pledged to work with Russia and China, speaking at Hankuk University ahead of a summit in Seoul aimed at reducing the risk of nuclear terrorism.

The president emphasised the US's unique position to seek change but said "serious sustained global effort" was needed.

  • 26 Mar 2012
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