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MINSK, BELARUS - FEBRUARY 11: Russian President Vladimir Putin attends the the summit held for the situation in Ukraine with the participation of Ukrainian President Petro Poroshenko, German Chancellor Angela Merkel, and French President Francois Hollande at the Independence Palace in Minsk, Belarus on February 11, 2015. (Photo by Sefa Karacan/Anadolu Agency/Getty Images)

MINSK, BELARUS - FEBRUARY 11: Russian President Vladimir Putin attends the the summit held for the situation in Ukraine with the participation of  Ukrainian President Petro Poroshenko, German Chancellor Angela Merkel, and French President Francois Hollande at the Independence Palace in Minsk, Belarus on February 11, 2015. (Photo by Sefa Karacan/Anadolu Agency/Getty Images)