April 8, 2010: Obama visits Prague to sign the New START treaty with Russian President Dmitry Medvedev, a pact hailed as the biggest nuclear arms reduction treaty in a generation.
Obama shares his dream of a nuke free world before a spirited crowd in Prague.
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Obama, with Medvedev (left) and Czech Republic President Vaclav Klaus at the Prague Castle.
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Obama and Medvedev sign the treaty.
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Obama and Medvedev at a post-signing news conference at Prague Castle.
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Reporters watch Obama on Television.
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