On November 11th, 2019, Ambassador Stephen D. Mull, Vice Provost for Global Affairs at the University of Virginia visited Center for American Studies, Fudan University with the delivery of presentation entitled "Models of U.S. Foreign Policy Decision Making" at the 16th High-end Series Lecture on Sino-U.S. Relations. Ambassador Mull has served in a broad range of U.S. national security positions, most recently as Acting Under Secretary for Political Affairs at the U.S. Department of State, working as the day-to-day manager of overall regional and bilateral policy issues, and overseeing the bureaus for Africa, East Asia and the Pacific, Europe and Eurasia, the Near East, South and Central Asia, the Western Hemisphere, and International Organizations. He served as Lead Coordinator for Iran Nuclear Implementation from August 2015 until August 2017, in which capacity he led U.S. government inter-agency efforts and diplomacy to implement the Joint Comprehensive Plan of Action (JCPOA). Mull was the U.S. Ambassador to the Republic of Poland from 2012 until 2015 and U.S. Ambassador to the Republic of Lithuania from 2003 to 2006. Within the public lecture, Ambassador Mull succinctly highlighted the emergence and development paradigms of U.S. foreign policy decision making, imparting the integral repertoire constituting pragmatic approaches and featured processes in the realm of foreign policy decision making through enduring credentials of diplomatic service. In the vein of preceding remarks, the distinguished diplomat unfolded a succession of adjustments outlining U.S. foreign policy decision making under the Trump administration. Professor WU Xinbo, Director of the Center for American Studies and Dean of the Institute of International Studies at Fudan University facilitated the event, proposing specific comments correspondingly and the audience interacted candidly with the presenter evolving around the related issues of common concern in the well-received Q&A session. (Preceding English Paragraphs by Mao Xiaojun)