Question

Which nation did the United States invade as a part of its counterterrorism efforts?

Answer 1

U.S. counterterrorism proved successful this year, writes Daniel Byman, especially against jihadist movements that have plagued the United States and the world since 9/11. Jihadist terrorism still poses a problem, he explains, and other forms of terrorism have risen too in intensity, but a look at the terrorism balance sheet for 2017 shows a net positive. This post originally appeared on Lawfare.

Answer 2

Hoping to bring Osama bin Laden to justice, the United States and its allies invaded Afghanistan in October 2001.

Sorry I'm probably too late but I hope this helps anyone else looking for the answer!