International Atomic Energy Agency inspectors are going to play a critical role in any final deal with Iran. But who are these inspectors? What do they do? What can't they do? Mark speaks with former IAEA inspector Thomas Shea who offers a grounds-eye view of what a robust inspection regime looks like. Dr. Shea also puts the potential inspections of Iran's program in the broader context of the IAEA's history of its work on behalf of international peace and security. We don't yet know what the Iran nuclear deal might look like. But if a deal is struck, the IAEA will be the lynchpin that holds it all together. This episode gives you an excellent perspective of how these inspections actually work.