Two weeks ago on Horns of a Dilemma, Professor Jim Goldgeier of American University and the Brookings Institution joined Ambassador Alexandra Hall Hall to discuss the thematic connections between the choice in the early 1990s to add new members to the NATO alliance and Britain's choice in 2016 to leave the European Union. In last week's episode, Professor Goldgeier expanded on the history, politics, and consequences of NATO expansion and enlargement. This week, completing the cycle, Ambassador Hall Hall discusses Brexit. Ambassador Hall Hall speaks from personal experience as the senior British diplomat for Brexit issues in the United States, a position from which she ultimately resigned, leaving the British diplomatic corps out of principled disagreement with the way in which the Brexit narrative was being played out. This event was recorded at the Summer Seminar on History and Statecraft sponsored by the Clements Center at the University of Texas, Austin, and held in Beaver Creek, Colorado.