"The White House said Sunday that U.S. forces in northeast Syria will move aside and clear the way for an expected Turkish assault, essentially abandoning Kurdish fighters who fought alongside American forces in the yearslong battle to defeat Islamic State militants. Turkish President Recep Tayyip Erdogan has threatened to launch the military assault against Kurdish forces across the border he views as a threat to his country. Republicans and Democrats have warned that allowing the Turkish attack could lead to a massacre of the Kurds, sending a troubling message to American allies across the globe."