MOSCOW, RUSSIA - SEPTEMBER 23: (L-R) Russian businessman Suleiman Kerimov, Turkish President Tayyip Erdogan, Russian President Vladimir Putin,Russian Grand Mufti Ravil Gainutdin and Palestinian President Mahmoud Abbas attend an opening ceremony for the newly restored Moscow Cathedral Mosque on September 23, 2015 in Moscow, Russia. Russian President Vladimir Putin, Turkish President Tayyip Erdogan and Palestinian President Mahmod Abbas joined for mosque opening in Moscow. (Photo by Sasha Mordovets/Getty Images)
