The document discusses the refugee crisis caused by the Syrian civil war. It begins by outlining the stages of a refugee crisis and explaining that there are currently 19 million refugees worldwide. It then discusses the causes of the Syrian civil war, including opposition to President Bashar al-Assad and terrorist groups like ISIS. This has led to over 4 million Syrians fleeing the country. The document also examines why so many Syrian refugees are seeking asylum in Europe and the challenges faced by both refugees and European countries in dealing with the large influx of people.