How the Islamic State got a foothold in Afghanistan

Last April, the U.S. military set out to take on the Islamic State in Afghanistan. At the time, officials estimated the group had about 700 fighters in the country. The U.S. forces seemed confident they could extinguish the jihadists. The United States targeted the fighters with the “mother of all bombs,” which was dropped on caves in Afghanistan last spring. […]

Source: http://www.washingtonpost.com/blogs/worldviews/wp/2018/03/21/how-the-islamic-state-got-a-foothold-in-afghanistan/