Center on Europe and Eurasia

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Ukrainian sailors kept on their ship by Russian servicemen as Russian forces without insigna invide Crimea in Sevastopol, Ukraine, on March 5, 2014. (Pierre Crom via Getty Images)

A view of the area during ongoing construction works of Cerkezkoy-Kapikule railway line in Edirne, Turkey, on October 22, 2021. (Gokhan Balci/Anadolu Agency via Getty Images)

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Finnish, NATO, and US flags during a NATO foreign ministers' meeting at the alliance's headquarters in Brussels on April 4, 2023. (Johanna Geron/AFP via Getty Images)

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The expedition cruise ship Polar Pioneer at Gnålodden in the Hornsund in Svalbard, Norway, on July 15, 2015. (Wolfgang Kaehler via Getty Images)

Russian President Vladimir Putin and China's President Xi Jinping toast during a reception at the Kremlin, Moscow, on March 21, 2023. (Pavel Byrkin/SPUTNIK/AFP via Getty Images)

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Nakhimov Square in Sevastopol, Crimea on March 19, 2023. (Vladimir Aleksandrov via Getty Images)

Ukrainian servicemen fire a D-30 howitzer at Russian positions near Bakhmut, Ukraine, on March 21, 2023. (Sergey Shestak/AFP via Getty Images)