Dr. James Walsh of MIT is a nuclear security security expert and one of the few Americans who have travelled to both Iran and North Korea for talks on nuclear issues. To this day, Jim meets frequently with North Korean officials to discuss nuclear issues. I spoke with Jim the day that Moon Jae-In was elected as president of South Korea, potentially setting up a very different dynamic for nuclear diplomacy with North Korea. We kick off with a discussion about this new South Korean leader and how his approach to the North differs from that of his predecessor. We then pivot to a longer conversation about how Jim became involved in nuclear issues and his decades long study of North Korea's nuclear programs. You will learn a whole lot about North Korea and nuclear security issues in this rather lively episode.    You can EMAIL Mark by clicking here.   Become a premium subscriber to unlock bonus episodes, earn other rewards, and support the show! Bonus episodes for premium subscribers include: #1: International Relations Theory, explained. #2: A Brief History of Nuclear Non-proliferation #3: A Brief History of NATO #4: The Syrian Civil War, explained.  #5: Meet the Kim family of North Korea. #6: Better Know Vladimir Putin #7: The Six Day War, Explained. (Coming soon!) #9: "Sustainable Development," explained (Coming soon!)