There is a caravan—you've probably heard something about it. Stephanie Leutert, director of the Mexico Security Initiative at the Robert S. Strauss Center for International Security and Law, has heard something about it. On Friday, Benjamin Wittes caught up with Stephanie to talk about her time on the Mexico-Guatemala border traveling with migrants who are following a trail not unlike that of the caravan. They talked about why people are joining this caravan, what the alternatives to it are, why certain migrants are shunning it, the pushes out of countries like Honduras and Guatemala, and what it's like to be a child on the long trek to the United States.