REVEALED: How rich is Taliban & how they got funding to survive U.S onslaught

For 20 years, United States and its NATO allies fought Taliban in a bid to weaken it. But the military campaign against Taliban seems to have made little difference as is evident by the capture of Kabul and rest of Afghanistan by the insurgents. Taliban is now one of the most powerful and richest insurgent groups in the world. But what are the sources of revenue? Watch this report to know the four ways Taliban make billions of dollars in Afghanistan.