Penny M. Von Eschen is author of the new book, “Paradoxes of Nostalgia: Cold War Triumphalism and Global Disorder since 1989.” Penny is the William R. Kenan Jr. Professor of American Studies and Professor of History at the University of Virginia and author of, “Satchmo Blows Up the World: Jazz Ambassadors Play the Cold War,” and “Race against Empire: Black Americans and Anticolonialism, 1937–1957.” We speak with Penny about the enduring legacy of the Cold War in international politics.