Bucknell alumnus William Wood ’72, ambassador to Afghanistan (2007-09) and Columbia (2003-07), will share his insights on “What Is the Role of Diplomacy in the International Relationships Today?” on Tuesday, Jan. 23, at 7 p.m. in the Gallery Theatre, Elaine Langone Center. The free, public event is sponsored by the Bucknell Institute for Public Policy, the Career Development Center and Development & Alumni Relations.