Vladimir Putin

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In this March 21, 2014, photo, Russian President Vladimir Putin signs bills making Crimea part of Russia in the Kremlin in Moscow. U.S. sanctions against a Russian bank and the Kremlin's inner circle have pinched Moscow, but if the goal is to get Putin to roll his forces out of Crimea or prevent him from doing any more land grabs, their effectiveness remains in doubt. Putin has mocked the punitive steps President Barack Obama has taken so far in their post-Cold War game of chess _ or chicken. (AP Photo/Sergei Chirikov, Pool)

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In this March 21, 2014, photo, Russian President Vladimir Putin signs bills making Crimea part of Russia in the Kremlin in Moscow. U.S. sanctions against a Russian bank and the Kremlin's inner circle have pinched Moscow, but if the goal is to get Putin to roll his forces out of Crimea or prevent him from doing any more land grabs, their effectiveness remains in doubt. Putin has mocked the punitive steps President Barack Obama has taken so far in their post-Cold War game of chess _ or chicken. (AP Photo/Sergei Chirikov, Pool)

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Russian President Vladimir Putin speaks at a signing ceremony of bills making Crimea part of Russia in the Kremlin in Moscow, Friday, March 21, 2014. President Vladimir Putin completed the annexation of Crimea on Friday, signing the peninsula into Russia at nearly the same time his Ukrainian counterpart sealed a deal pulling his country closer into Europe's orbit. (AP Photo/Sergei Chirikov, Pool)

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Russian President Vladimir Putin attends a signing ceremony of bills making Crimea part of Russia in the Kremlin in Moscow, Friday, March 21, 2014. President Vladimir Putin completed the annexation of Crimea on Friday, signing the peninsula into Russia at nearly the same time his Ukrainian counterpart sealed a deal pulling his country closer into Europe's orbit. (AP Photo/Sergei Chirikov, Pool)

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Russian President Vladimir Putin chairs a meeting with Security Council members in the Kremlin in Moscow, Russia, Friday, March 21, 2014. There is no need for Russia to further retaliate against U.S. sanctions, President Vladimir Putin said Friday as Russia's upper house of parliament endorsed the annexation of Crimea from Ukraine. (AP Photo/RIA-Novosti, Alexei Druzhinin, Presidential Press Service)

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