"Fighting continues across Syria, pitting government forces and their foreign allies against a range of anti-government insurgents, some of whom also are fighting amongst themselves. Since March 2011, the conflict has driven more than 2.6 million Syrians into neighboring countries as refugees (out of a total population of more than 22 million). Millions more Syrians are internally displaced and in need of humanitarian assistance, of which the United States remains the largest bilateral provider, with more than $1.7 billion in funding identified to date. U.S. nonlethal assistance to opposition forces was placed on hold in December 2013, as fighting in northern Syria disrupted mechanisms put in place to monitor and secure U.S. supplies. Administration officials have since resumed some assistance to select opposition groups. […] The United States and other members of the United Nations Security Council seek continued Syrian government cooperation with efforts to remove chemical weapons from Syria and provide relief. The Security Council also has endorsed principles for a negotiated settlement of the conflict that could leave members of the current Syrian government in power as members of a transitional governing body, an outcome that some opposition groups reject."
CRS Report for Congress, RL33487