 How do you stop violence in Colombia? Well, according to its president, it's by legalising the cocaine trade. Hello, thank you for tuning in to the Marketplace Morning Report and we're coming to you live from the BBC World Service. I'm Leanna Byrne. Colombia's President Gustavo Petro says the armed conflict in his country would end within a day if the UN declares cocaine legal across the world. He says that illegal cocaine trades' massive profits fuel violence by supporting armed groups.