If you'd like to know where the refugee crisis began, I can start you off with this thread on the creation of the refugee crisis. If you'd like more, or it doesn't answer your question precisely, please feel free to let me know, and I will expand on it. The above is a great place to get an idea of how conflicting the narratives are as to how the refugees became refugees. Please feel free to ask follow-ups: this is a complex topic, after all :)!