Former National Security Advisor to Joe Biden, Former Deputy Chief of Staff in the State Department, Former Director of Policy Planning, Senior Advisor during the Iran Nuclear Negotiations, Top Foreign Policy Advisor to Hillary Clinton during her campaign, and now, a professor at Yale and a senior fellow at the Carnegie Endowment for International Peace: Jake Sullivan has lead a busy life, but he recently took time to sit down with the Cipher Brief's CEO and Publisher Suzanne Kelly to discuss our relations with Iran, the changes at the State Department, and what we can do to face our biggest security threats.