 Speaking at the United Nations Peacebuilding Commission in New York, Mr. Petro said that profits from the illegal cocaine trade fueled the violence in Colombia. He said it was regrettable that most countries wouldn't agree to legalize drugs for what he called political reasons. The country's drug trafficking routes are controlled not only by criminal gangs, but also by rebel groups who've been fighting the armed forces for six decades. The cocaine trade is their main source of income.