Cocaine: why the cartels are winning

America spends $40bn a year on the war on drugs. But its “zero tolerance” approach has done little to curb addiction or overdose rates, which are the highest in the world. Click here to subscribe to The Economist on YouTube: https://econ.st/2xvTKdy Daily Watch: mind-stretching short films throughout the working week. For more from Economist Films visit: https://econ.st/2MFURxs Check out The Economist’s full video catalogue: http://econ.st/20IehQk Like The Economist on Facebook: https://econ.st/2ML6TFY Follow The Economist on Twitter: https://econ.st/2ML6Ud0 Follow us on Instagram: https://econ.st/2ML6PWK Follow us on Medium: https://econ.st/2ML6Wl8