(FILES) Colombian President Gustavo Petro addresses the Organization of American States (OAS) Permanent Council in Washington, DC, on February 4, 2026. Colombian President Gustavo Petro ended on April 21, 2026, the peace negotiations with one of the country's main guerrilla groups, led by 'Calarca', marking another setback for his peace policy ahead of his departure from office in August. (Photo by ANDREW CABALLERO-REYNOLDS / AFP via Getty Images)