"The ongoing conflict in Syria has created one of the most pressing humanitarian crises in the world. An estimated 6.8 million people in Syria, almost one-third of the population, have been affected by the conflict, including more than 4.2 million displaced inside Syria (estimate as of August 15, 2013). On September 3, the U.N. High Commissioner for Refugees (UNHCR) announced that the number of Syrians displaced as refugees exceeded 2 million, with 97% fleeing to countries in the immediate surrounding region, including Turkey, Lebanon, Jordan, Iraq, Egypt, and other parts of North Africa. The situation is fluid and continues to worsen, while humanitarian needs are immense and increase daily."
CRS Report for Congress, R43119