April 8, 2010. Russian President Dmitry Medvedev and U.S. President Barack Obama at the Czech President's residence in the Prague Castle. Background center: Czech President Vaclav Klaus.

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April 8, 2010. Russian President Dmitry Medvedev, left, and U.S. President Barack Obama, right, at the residence of Czech President Vaclav Klaus, center, in the Prague Castle.

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April 8, 2010. Russian President Dmitry Medvedev, left, and U.S. President Barack Obama, right, at the residence of Czech President Vaclav Klaus, center, in the Prague Castle.

08.04.2010#621315

Presidents Dmitry Medvedev of Russia and Barack Obama of the United States seen inside the Czech president's residence at Prague Castle after attending a joint press-conference, April 8, 2010.

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Presidents Dmitry Medvedev of Russia and Barack Obama of the United States seen inside the Czech president's residence at Prague Castle after attending a joint press-conference, April 8, 2010.

08.04.2010#621312

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

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April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621294

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621293

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621289

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621288

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621284

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621283

From right: Presidents Dmitry Medvedev of Russia and Barack Obama of the United States attending a joint press-conference after having signed a new Strategic Arms Reduction Treaty (START) at the Spanish hall of the Czech president's residence at Prague Castle, April 8, 2010.

08.04.2010#621282

From right: Presidents Dmitry Medvedev of Russia and Barack Obama of the United States attending a joint press-conference after having signed a new Strategic Arms Reduction Treaty (START) at the Spanish hall of the Czech president's residence at Prague Castle, April 8, 2010.

08.04.2010#621281

From right: Presidents Dmitry Medvedev of Russia and Barack Obama of the United States attending a joint press-conference after having signed a new Strategic Arms Reduction Treaty (START) at the Spanish hall of the Czech president's residence at Prague Castle, April 8, 2010.

08.04.2010#621280

(From right, background) Presidents Dmitry Medvedev of Russia and Barack Obama of the United States attending a joint press-conference after having signed a new Strategic Arms Reduction Treaty (START) at the Spanish hall of the Czech president's residence at Prague Castle.

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April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621210

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621209

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621159

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621158

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621142

April 8, 2010. Russian President Dmitry Medvedev, right, and U.S. President Barack Obama during a joint news conference after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621141

April 8, 2010. From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621124

April 8, 2010. Russian President Dmitry Medvedev after signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621123

April 8, 2010. From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621122

April 8, 2010. From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle.

08.04.2010#621121

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621091

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621089

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621088

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621086

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621084

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama before the ceremony of signing the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621082

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621075

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621074

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621073

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama during the signing of the treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621072

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621054

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621053

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621052

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621051

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621047

From right: Russian President Dmitry Medvedev and U.S. President Barack Obama signing a treaty on further reduction of strategic arms (START). The ceremony took place in the Spanish Hall of the Czech President's residence in the Prague Castle 8 April 2010.

08.04.2010#621045

From left in the background: Russian President Dmitry Medvedev and U.S. President Barack Obama before their meeting in the Czech President's residence in the Prague Castle prior to signing a treaty on further cuts in strategic arms, 8 April 2010. Far right: Czech President Vaclav Klaus.

08.04.2010#620950

Russian President Dmitry Medvedev, second right, and U.S. President Barack Obama, second left, meet in the Czech President's residence in the Prague Castle before signing a treaty on further cuts in strategic arms, 8 April 2010.

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From right left: Russian President Dmitry Medvedev and Czech President Vaclav Klaus at the Czech President's residence in the Prague Castle where the signing ceremony of a treaty on further strategic arms cuts will take place. 8 April 2010.

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From right: Russian President Dmitry Medvedev and U.S. President Barack Obama meet in the Czech President's residence in the Prague Castle before signing a treaty on further strategic arms cuts, 8 April 2010.

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From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

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From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

08.04.2010#620941

From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

08.04.2010#620940

From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

08.04.2010#620939

From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

08.04.2010#620938

From right in the foreground: Russian President Dmitry Medvedev and U.S. President Barack Obama before their meeting in the Czech President's residence in the Prague Castle prior to signing a treaty on further strategic arms cuts. In the center is Czech President Vaclav Klaus. 8 April 2010.

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Russian President Dmitry Medvedev, center, and U.S. President Barack Obama, second right, before their meeting in the Czech President's residence in the Prague Castle prior to signing a treaty on further strategic arms cuts. At left is Czech President Vaclav Klaus. 8 April 2010.

08.04.2010#620936

From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

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From left: Russian President Dmitry Medvedev, President of the Czech Republic Vaclav Klaus and U.S. President Barack Obama during the photo shoot in the Czech President's residence in the Prague Castle, 8 April 2010.

08.04.2010#620934

From right in the foreground: Russian President Dmitry Medvedev and U.S. President Barack Obama before their meeting in the Czech President's residence in the Prague Castle prior to signing a treaty on further strategic arms cuts. In the center is Czech President Vaclav Klaus. 8 April 2010.

08.04.2010#620933

Russian President Dmitry Medvedev signs the Visitor's Book at the Czech President's residence in the Prague Castle. From left: US President Barack Obama and Czech President Vaclav Klaus. 8 April 2010.

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From right: Russian President Dmitry Medvedev and U.S. President Barack Obama before their meeting in the Czech President's residence in the Prague Castle prior to signing a treaty on further strategic arms cuts, 8 April 2010.

08.04.2010#620931

From right left: Russian President Dmitry Medvedev and Czech President Vaclav Klaus at the Czech President's residence in the Prague Castle where the signing ceremony of a treaty on further strategic arms cuts will take place. 8 April 2010.

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From right: Russian President Dmitry Medvedev and U.S. President Barack Obama meet in the Czech President's residence in the Prague Castle before signing a treaty on further reductions of strategic arms, 8 April 2010.

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