Sources: Al Jazeera
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". 2016-12-19
Russia withdraws a request to refuel three of its warships, including the flagship of the Russian Navy, "Admiral Kuznetsov", en route to Syria, at the Spanish port of Ceuta following NATO pressure on the Spanish government to not allow the warships to dock. 2016-10-26
Turkey says a Russian warplane violated its airspace near the Syrian border, prompting the Turkish Air Force to scramble two F-16 fighter jets to intercept it. The Foreign Ministry summoned Russia's ambassador to protest the violation and urged Russia to avoid repeating such a violation, or it would be held "responsible for any undesired incident that may occur". 2015-10-5
Israeli aircraft carry out a strike near the Syrian coastal city of Latakia targeting Russian-made S-125 air defense missiles allegedly intended for use by the Lebanese militant group Hezbollah. 2013-11-1
Russia arms Syria with Iskander missiles in response to NATO's stationing of Patriot missile defense systems in Turkey. 2012-12-8
2011 Syrian uprising: At least 19 people are killed across Syria by security forces as protests continue against the regime of President Bashar al-Assad. 2011-11-19
Russia and the People's Republic of China veto a United Nations Security Council resolution condemning Syria for a crackdown on political protestors. 2011-10-4
Syrian President Bashar al-Assad issues an amnesty for all "political crimes" amid continuing protests. 2011-05-31
The United Nations Human Rights Council condemns Syria for using deadly force against peaceful protesters and calls for an investigation into the killing of civilians and other alleged crimes; China, Russia and Pakistan vote against measures as "meddling in Syria's internal affairs".2011-04-29