The war, which began on 15 March 2011 with major unrest in Damascus and Aleppo, is being fought by several factions: the Syrian Armed Forces and its international allies, a loose alliance of mostly Sunni opposition rebel groups (including the Free Syrian Army), Salafi jihadist groups (including al-Nusra Front), the mixed Kurdish-Arab Syrian Democratic Forces (SDF), and the Islamic State of Iraq and the Levant (ISIL), with a number of countries in the region and beyond being either directly involved or providing support to one or another faction (Iran, Russia, Turkey, the United States, as well as others).