Dr. Natasha Bajema interviews Jon Wolfsthal, a renowned nuclear expert with a career spanning several decades. He is the former Special Assistant to the President for National Security and Senior Director for Nonproliferation and Arms Control at the National Security Council. Currently, Jon is a Fellow at Harvard University's Belfer Center and Carnegie Endowment for International Peace and a Senior Advisor to Global Zero. We talk about what it’s like to work at the highest levels of national security policymaking--the White House and the Pentagon. Then we discuss the push for no-first-use of nuclear weapons and renewing the New Start Treaty with Russia.