The Russian ambassador to Turkey Andrei Karlov is killed in a gun attack at an art gallery in Ankara. Russia calls the assassin, 22-year old police officer, Mevlüt Mert Altıntaş, a "terrorist". Turkish Foreign Minister Mevlüt Çavuşoğlu goes to Moscow for a planned trilateral meeting on Syria, saying "the incident will not impact relations between Turkey and Russia".