Secretary of State Rex Tillerson outlined a major reorganization of the State Department, eliminating a raft of special envoy posts established to reach out to Muslim communities, support anti-government fighters in Syria, and curb the environmental devastation wrought by global warming. In a letter to Bob Corker, the Chairman of the of the Senate Committee on Foreign Relations, Tillerson cited concern about the proliferation of 70 special envoys positions in recent decades, including positions set up years ago to promote peace in Ireland and restore diplomatic relations with Burma.