The Cambridge Institute on Religion and International Studies selected John Hartley from among leading experts to address the topic “Religious Diplomacy with Iran after the Nuclear Deal.” Hartley presented at a gathering of senior Western diplomats organized in Brussels. His paper analyzes the field of play for religious diplomacy between Iran and democratically-minded transatlantic societies. The analysis connects history and memory to institutional structure, social networks and political competition to introduce games of survival and influence that are foundational to religious diplomacy with Iran. Hartley presented the paper and then addressed questions from the group of diplomats who together form the Transatlantic Policy Network on Religion and Diplomacy.