More than 200,000 Syrians have lost their lives in four years of armed conflict, which began with anti-government protests before escalating into a full-scale civil war. More than 11 million others have been forced from their homes as forces loyal to President Bashar al-Assad and those opposed to his rule battle each other - as well as jihadist militants from Islamic State. This is the story of the civil war so far, in eight short chapters.
1. Uprising turns violent