Vladimir Putin Vladimir Putin

Russian President Vladimir Putin, shown delivering his state of the union speech earlier this month, was riding high this year as the country hosted the Winter Olympics. Russia is now embroiled in economic turmoil, and Putin has alienated Western countries that could potentially help. Pavel Golovkin/AP hide caption

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Pavel Golovkin/AP

Russian President Vladimir Putin, in his state of the union speech on Thursday, defended the Kremlin's aggressive foreign policy, saying the actions are necessary for his country's survival. Pavel Golovkin/AP hide caption

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Pavel Golovkin/AP

Russia's President Vladimir Putin (right) helps put a shawl or coat on Peng Liyuan, wife of China's President Xi Jinping, as Xi talks to President Obama during a fireworks show celebrating the Asia-Pacific Economic Cooperation session in Beijing. Reuters/Landov hide caption

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Reuters/Landov

Former President George W. Bush (right) and his father, former President George H.W. Bush, wave as they leave a family wedding in Washington, D.C., in May 2006. Normand Blouin-Pool/Getty Images hide caption

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Normand Blouin-Pool/Getty Images

43 On 41: A President Traces The Life Of His Father

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Joshua Ferris' To Rise Again at a Decent Hour is on the shortlist for the Man Booker Prize. Ferris and fellow American writer Karen Joy Fowler were named alongside Australian Richard Flanagan and Britons Howard Jacobson, Neel Mukherjee and Ali Smith. Beowulf Sheehan/Courtesy of Little, Brown and Co. hide caption

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Beowulf Sheehan/Courtesy of Little, Brown and Co.

Russian soldiers march in Moscow's Red Square during Friday's Victory Day parade, a show of military might amid tensions in Ukraine following Moscow's annexation of Crimea. Kirill Kudryavtsev/AFP/Getty Images hide caption

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Kirill Kudryavtsev/AFP/Getty Images

Russia's President Vladimir Putin, right, addressed the media Wednesday along with the head of the Organisation for Security and Cooperation in Europe (OSCE), Swiss President Didier Burkhalter. ALEXEY DRUZHININ/AFP/Getty Images hide caption

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ALEXEY DRUZHININ/AFP/Getty Images

Russian President Vladimir Putin as he answered questions on national TV Thursday in Moscow. Alexey Nikolsky/RIO Novosti/Kremlin pool/EPA/Landov hide caption

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Alexey Nikolsky/RIO Novosti/Kremlin pool/EPA/Landov

A Russian armored vehicle on the road between Simferopol and Sevastopol in Crimea earlier this month. Russia annexed the region two weeks ago. Other Russian forces, across the border from Ukraine, may pull back in coming days. Viktor Drachev/AFP/Getty Images hide caption

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Viktor Drachev/AFP/Getty Images