In May 2018, President Trump withdrew the United States from the Iran nuclear deal and re-imposed crippling economic sanctions against Tehran. Iran responded by restarting elements of its nuclear program and sponsoring militant attacks against US interests and allies in the Middle East. Colin Kahl, Steven C. Házy Senior Fellow at the Freeman Spogli Institute for International Studies' Center for International Security and Cooperation and former National Security Advisor to the Vice President of the United States, speaks with World Affairs CEO Jane Wales about Trump's Iran strategy and how it risks igniting war.