Will Gustavo Petro overhaul Colombia's economy, forests, and drug policy?

Colombia is Latin America’s longest-standing democracy, but it’s never elected a leftist president … until now.

Gustavo Petro swept to power by a slim margin in June, thanks largely to young Colombian voters. What do they want from him? Change. It won't be easy. Petro wants to provide free university education and health care, to end oil exploration and to tax the rich. Will he deliver?

On GZERO World, Colombia's new leader sits down with Ian Bremmer in his first American interview to talk about his plans for Colombia's future, his views on the War on Drugs, and how he'll handle relations with Venezuela and the US.