Trump is tapping into the very real fears that many Americans have about the rise of ISIS and the seeming inability of the United States to eliminate the threat posed by radical jihadists more than fifteen years after 9/11. Recent events such as repeated terrorist attacks in the United Kingdom, as well as Germany, Belgium, and France and frequent high profile attacks in Iraq and Afghanistan serve as repeated reminders of the failing of “the West” to defeat this threat at home or abroad despite significant investments of lives and money.
https://medium.com/out-of-order/terrorism-and-the-liberal-international-order-90bd154aaaec