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MOSCOW, RUSSIA - OCTOBER 17: Demonstrators hold placards during a protest against the Russian air strikes in Syria, in the Suvorov square in Moscow, Russia on October 17, 2015. Demonstrators also chanted slogans against the Russian President Vladimir Putin and Syrian President Bashar al-Assad during the protest. (Photo by Sefa Karacan/Anadolu Agency/Getty Images)

MOSCOW, RUSSIA - OCTOBER 17: Demonstrators hold placards during a protest against the Russian air strikes in Syria, in the Suvorov square in Moscow, Russia on October 17, 2015. Demonstrators also chanted slogans against the Russian President Vladimir Putin and Syrian President Bashar al-Assad during the protest. (Photo by Sefa Karacan/Anadolu Agency/Getty Images)