Jeffery Sachs on Afghanistan

For more: From Vietnam to Afghanistan, from Iraq toSyria... the US sent its troops overseas time and again, yet almost every time it failed to change the other country for the better but left it in despair and turmoil. What is driving the US behind all of these? Answers from Prof. Jeffrey Sachs of the Columbia University. Subscribe to us on YouTube: Download our APP on Apple Store (iOS): Download our APP on Google Play (Android):