Political trends in recent years have seen a rise of right-leaning nationalism and populism around the globe, including in the United States. What are the sources of nationalism, and what are its effects on modern politics? On this episode, Lawfare founding editor and Harvard law professor Jack Goldsmith sits down with John Judis, editor-at-large at Talking Points Memo and author of "The Nationalist Revival." They discussed Judis’s book, including the necessity of nationalism in developed democracies, why right-wing nationalist and populist movements seem to be winning out over those on the left, and how Donald Trump successfully raised the profile of nationalist politics in the United States.