Jean talks with Paul Walker, PhD and Director of Security & Sustainability at Global Green USA, a non-profit NGO dealing with climate change, green schools, enviro-education, and safety-security issues. He will report on the 2012 International Nuclear Security Summit in Seoul South Korea--discussing treaties, inspections and cooperative limiting mechanisms needed to keep high-level nuclear materials out of terrorist hands. The 2012 Nuclear Security Summit is the second convened by the Obama Administration. Thanks to the Mainstream Media Project for facilitating this interview.