In the afternoon of May 4, Yu Bin, professor of politics of Wittonburg University in America and senior researcher of Shanghai Academy of American Studies, visited GRIIS and delivered a lecture entitled “The Ukraine / Crimea Crisis and Issues in US Foreign Policy Decision Making”. Participants include professors such as Chen Hanxi, director of Center for European Studies, Li Yongning, chief editor of “International Focus” and master students of Center for European Studies. The lecture was chaired by Prof. Chen Hanxi.