Can there be flexible European integration in a post-Brexit environment? 1809 Social Sciences - Political Science - International Relations September 26, 2017 European Council on Foreign Relations · Mark Leonard discusses the idea of flexible European integration in a post-Brexit environment. Image courtesy of interviewee ECFR Mark leonard Log-in or Sign-up to Faculti Currently viewing this subject insight as a guest. You have insight(s) remaining for this month. Login Sign-up or Subscribe