May 19, 2012. Prime Minister Dmitry Medvedev, right, arrives to Washington airport, to take part in the G8 Summit. Left: Russian Ambassador to the USA Sergei Kislyak.

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May 19, 2012. Prime Minister Dmitry Medvedev, right, arrives to Camp David, the country retreat of the U.S. President, to take part in the G8 Summit.

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May 19, 2012. Prime Minister Dmitry Medvedev, right, arrives to the Washington airport, to take part in the G8 Summit. Left: Russian Ambassador to the USA Sergei Kislyak.

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May 19, 2012. Prime Minister Dmitry Medvedev, left, and U.S. President Barack Obama shaking hands ahead of the G8 Summit in Camp David, the country retreat of the U.S. leader.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. U.S. President Barack Obama before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. U.S. President Barack Obama before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (left) and U.S. President Barack Obama greet each other before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (third from right background) during the working dinner of heads of state and government of the "Big Eight". From left to right background: President of France Francois Hollande, U.S. President Barack Obama, British Prime Minister David Cameron, right background: German Chancellor Angela Merkel, right foreground: European Commission President Jose Manuel Barroso.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev before the working summit of heads of state and governments in the "Big Eight".

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May 19, 2012. Russian Prime Minister Dmitry Medvedev during the working dinner of heads of state and government of the "Big Eight". Right: German Chancellor Angela Merkel.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (center) is met at the airport in Washington where he arrived to attend the G-8 summit. Third from right - Russian Ambassador to the U.S.A. Sergei Kislyak.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (center) during the working dinner of heads of state and government of the "Big Eight". Left: From left to right: British Prime Minister David Cameron, right: German Chancellor Angela Merkel.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (second from right) is met at the airport in Washington where he arrived to attend the G-8 summit. Third from right - Russian Ambassador to the U.S.A. Sergei Kislyak.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (second from right) during the working dinner of heads of state and government of the "Big Eight". From left to right: President of France Francois Hollande, U.S. President Barack Obama, British Prime Minister David Cameron, right: German Chancellor Angela Merkel.

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May 19, 2012. Russian Prime Minister Dmitry Medvedev (right) is met at the airport in Washington where he arrived to attend the G-8 summit. Third from right - Russian Ambassador to the U.S.A. Sergei Kislyak.

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