The Syrian Civil War is an ongoing multi-sided armed conflict with international interventions taking place in Syria. The unrest began in the early spring of 2011 within the context of the Arab Spring protests, with nationwide protests against President Bashar al-Assad's government, whose forces responded with violent crackdowns. The conflict gradually morphed from mass protests to an armed rebellion after months of military sieges.
Estimated number of deaths in the conflict vary between 150,000 and 360,000 according to opposition activist groups, whereas the United Nations and Arab League Envoy to Syria reports an estimate of 400,000 fatalities as of April 23, 2016.
According to the Syrian Revelution Matryr Database, the Syrian opposition website, total number of fatalities have reached the level of 149,007 by the end of February 2016. The leading cause of death is gunshot wound, which caused 36.4% of all fatalities. The most affected governorates are Rif Dimashq (Damascus Countryside) and Aleppo, where 63,421 persons were killed. During the period military intervention, Russian air bombings have claimed lives of 1,097 people, while NATO-led coalition air attacks killed 434 Syrians.