He fled Syria's war as a teenager. He went back to help launch a tech industry / Fall of Bashar al-Assad after 24 years in power in Syria: how the world reacted / A short guide to Syria's long war / Who are the key players in the Syrian war? / Insurgents' attack on Assad-controlled Aleppo revives Syrian war after five-year truce / Nasrallah and Assad: the Syrian war that changed Hizbollah / Syrian war at ‘worst point’ in four years, says Commission of Inquiry head / Reeling from 12 years of war, ‘Syrian people are one and the people want the downfall of the regime’