Who is Gustavo Petro, Colombia's first leftist president? He’s a [deep breath] sixty-two-year-old-ex-leftist-guerilla-turned-mayor-turned-opposition-leader who rode a wave of voter anger to a narrow victory over a populist construction magnate last June. Got that?

But according to Petro himself, the answer is much more simple. “I’m a fighter,” Petro told Ian Bremmer in this episode of GZERO World. “I’ve been a fighter all my life in a country that has been through very difficult moments."

He was swept to power by a slim margin in June thanks mainly to young Colombians, after promising them something different in a country that's been rocked by mass protests over inequality and corruption.

Petro, who started his political career as a leftist guerrilla in the 1990s, wants to fight climate change by ending oil exploration and to massively increase social spending by taxing the rich more.

But whether he’ll be able to follow through on his promises is another question entirely.

Watch the GZERO World episode: Gustavo Petro: the guerilla-turned-president who wants to "develop capitalism"

More For You

South Korean President Lee Jae Myung leaves after giving a speech on the Government's first supplemetary budget bill of 2026 at the National Assembly in Seoul, South Korea, 02 April 2026.
JEON HEON-KYUN/Pool via REUTERS

South Korea's President Lee Jae-myung's Democratic Party is poised to win 11 of 16 municipal races, a reversal from four years ago when the now-disgraced PPP dominated. But Lee’s surging popularity has foreign policy ramifications.

Chris, an Army veteran, started his Walmart journey over 25 years ago as an hourly associate. Today, he manages a Distribution Center and serves as a mentor, helping others navigate their own paths to success. At Walmart, associates have the opportunity to take advantage of the pathways, perks, and pay that come with the job — with or without a college degree. In fact, more than 75% of Walmart management started as hourly associates. Learn more about how over 130,000 associates were promoted into roles of greater responsibility and higher pay in FY25.