Tillerson again insists Syrian leader Assad must go

Secretary of State Rex Tillerson, left, shakes hands with U.N. Special Envoy for Syria Staffan de Mistura before their meeting at the U.S. Mission to the U.N., Thursday in Geneva, Switzerland. (Alex Brandon/AP Photo Pool)

GENEVA — U.S. Secretary of State Rex Tillerson doubled down Thursday on Washington’s call for Syrian President Bashar Assad to leave power, looking past recent battlefield gains by his Russian-backed forces to insist that “the reign of the Assad family is coming to an end.”