… on topics related to nuclear security. Spring 2023 Schedule March 8 th , 12noon-1.20pm: Dave Allison (Harvard … the ISS colloquium). Rosenkranz Hall, room 005. Fall 2023 Schedule October 12 th , 4-5.30pm: Heather Williams (CSIS). … ISS colloquium). 46 Hillhouse Seminar Room. Spring 2024 Schedule February 6 th , 12noon-1.20pm: Caitlin Talmadge …