Kalypso Nicolaïdis, a professor of international relations at Oxford University and Franco-Greek author, says the EU needs to pivot the way it thinks from space to time - with a focus on long-term goals - in order to establish lasting peace and unity. Her new book "Exodus, Reckoning, Sacrifice: Three Meanings of Brexit" uses Greek mythology to draw comparisons between the epic battles that are being fought today and the historic tales of the past. She joined us for Perspective.