Jen Psaki sat down with Carnegie scholar and Iran expert Karim Sadjadpour to discuss the impact of this week’s Twitter war of words between U.S. President Donald Trump and Iranian officials, the future of Iran’s leaders, and President Trump’s approach to Iran policy. Sadjadpour is a senior fellow at the Carnegie Endowment for International Peace, where he focuses on Iran and U.S. foreign policy toward the Middle East. He is a regular contributor to the Atlantic, and has also written for Foreign Affairs, the New York Times, the Economist, and the Washington Post. (More on Sadjadpour - https://carnegieendowment.org/experts/340)