Obama’s vision: no nukes

(BBC): Barack Obama has outlined his vision of a world free of nuclear weapons in a major speech in Europe. The US president called for a global summit on nuclear security and the forging of new partnerships to prevent the spread of nuclear weapons. He said he hoped to negotiate a new treaty to end the production of fissile materials for nuclear weapons. North Korea’s "provocative" rocket launch earlier in the day underscored the need for action, he said. Although his nuclear goals might not be realised in his lifetime, he said he would strive to achieve them.

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