Gustavo Petro on Sunday became Colombia's first leftist president, pledging to unite the polarized country in the fight against inequality and climate change and achieve peace with leftist rebels and crime gangs.
Petro, a former member of the M-19 guerrilla group, was sworn in by Senate President Roy Barreras in Bogota's Bolivar Plaza on Sunday afternoon, watched by some 100,000 invitees including Spanish King Felipe VI, at least nine Latin American presidents and other Colombians invited by Petro.
