The Syrian war, which started with largely peaceful protests against the government, has descended into a sectarian war that has pulled in regional and global powers, killing at least 250,000 people – though with tens of thousands unaccounted for, some say the death toll may be as high as 400,000. Half of Syria's pre-war 22 million population have been displaced, creating one of the worst refugee crises in recent history. Millions have fled their wartorn country for a safer life in the Middle East and Europe.
There are actually at least two wars going on in Syria. First was the rebellion against President Bashar Assad, who responded to peaceful Arab Spring protesters in March 2011 with a crackdown so brutal that it sparked an armed revolt, which is still raging. Then came an invasion by Islamic State – also known as Isis, IS or Daesh – which Assad considers one of many terrorist groups arrayed against him.
