When discussing the pros and cons of nuclear energy, opponents generally bring up three main concerns: nuclear waste storage, perceived risk of nuclear power generation, and proliferation. In previous podcasts with Professor Burton Richter both storage and risk factors were extensively addressed. In this interview with Per Peterson, professor of nuclear engineering at UC Berkeley, we discuss nuclear proliferation. The interview is conducted by Jared Kruzek, a student in my class on renewable energy at Stanford, and the questions were composed by him with fellow students for the class project. The result is an interesting overview of the topic with insightful comments.