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Russian President Vladimir Putin and high ranking Russian officials hold a meeting on the Russian plane that crashed in Egypt on Oct. 31, in Moscow, Russia on November 17, 2015. (Kremlin Press Office/Anadolu Agency/Getty Images)

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US President Barack Obama (R) and French President Francois Hollande hold a joint news conference at the White House in Washington, DC on November 24, 2015. (YURI GRIPAS/AFP/Getty Images)

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Grand Place, Brussels, Belgium. (Garry Solomon /EyeEm/Getty Images)