From left: Russian President Dmitry Medvedev meets Kazakhstan's President Nursultan Nazarbayev at the Global Nuclear Security Summit, 12 April 2010.

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From left: Russian President Dmitry Medvedev meets Kazakhstan's President Nursultan Nazarbayev at the Global Nuclear Security Summit, 12 April 2010.

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Russian President Dmitry Medvedev, right, arrives in Washington DC for the Global Nuclear Security Summit, 12 April 2010. The Russian president's aircraft landed at Andrews Air Force base.

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From right: Russian President Dmitry Medvedev and Japan's Prime Minister Yukio Hatoyama before a working lunch on behalf of US President Barack Obama in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and Japan's Prime Minister Yukio Hatoyama before a working lunch on behalf of US President Barack Obama in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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Russian President Dmitry Medvedev and Finland's President Tarja Halonen before a working lunch on behalf of US President Barack Obama in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and Japan's Prime Minister Yukio Hatoyama before a working lunch on behalf of US President Barack Obama in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From left: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From left: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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From right: Russian President Dmitry Medvedev and US President Barack Obama before a working lunch on behalf of the US leader in honor of the heads of states and governments participating in the Global Nuclear Security Summit, 12 April 2010.

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