‘The one big lesson’ of the U.S. war in Afghanistan, according to Ian Bremmer

As the last of the U.S. troops leave Afghanistan, one geopolitics expert thinks America’s longest war left us with one key lesson.

“The one big lesson is that as rightfully angry and scared as Americans were after 9/11, we made Afghanistan into an almost existential threat to the American homeland — and it was never that,” Eurasia Group Founder Ian Bremmer told Yahoo Finance Live (video above). “It was never a grade A national security priority for the U.S. It never merited a hundred-plus…