The Intelligence Community Studies Board of the National Academies of Sciences, Engineering, and Medicine convened a workshop on February 27, 2020 to explore insights from world-class experts and technologists familiar with the extensive range of issues associated with the counterproliferation mission, which is countering the spread of weapons of mass destruction, their delivery systems, related technologies, and expertise as a result of indigenous developments and/or transfers between entities. The workshop was designed to explore emerging technology intersections of interest and areas of convergence with relevance to the mission of the National Counterproliferation Center (NCPC) within the Office of the Director of National Intelligence. This publication summarizes the presentation and discussion of the workshop.