What Colombia's first leftist president will mean for global politics

Former rebel Gustavo Petro has narrowly beaten a millionaire opponent to become Colombia's first leftist president. We discuss what this election could mean for Latin American politics and the rest of the world, with Juanita León, founder of news website La Silla Vacía; and Michael Shifter, former president of Inter-American Dialogue, a think tank focused on Latin America’s governance and prosperity.