"The Syria conflict, now in its seventh year, remains a significant policy challenge for the United States. U.S. policy toward Syria in the past several years has given highest priority to counterterrorism operations against the Islamic State (IS, also known as ISIL/ISIS), but also included assistance to opposition-held communities, support for diplomatic efforts to reach a political settlement to the civil war, and the provision of humanitarian assistance in Syria and surrounding countries. The counter-IS campaign works primarily 'by, with, and through' local partners, per a broader U.S. strategy initiated by the Obama Administration and continued with modifications by the Trump Administration. The United States has simultaneously advocated for a political track to reach a negotiated settlement between the government of Syrian President Bashar al Asad and opposition forces, within the framework of U.N.-mediated talks in Geneva."
CRS Report for Congress, RL33487