Abelardo de la Espriella, a Trump-backed far-right populist known as 'the Tiger,' won the preliminary vote count in Colombia's presidential runoff on Sunday.

The former criminal lawyer with triple citizenship promises mega-prisons and an all-out offensive against criminal groups.

His political movement holds no congressional seats and he faces the challenge of ending violence that has surged since the 2016 peace accord.

AI-generated summary was reviewed by a CNN editor.

Bogota, Colombia —