Research before pontificating is always a good idea.

NATO pulled out and declared an end to hostilities in Dec 2014. About 13k soldiers in the country fighting the Taliban and whomever else is there, and about half or more are U.S. soldiers.

Exactly how do we get left holding the bag after every war? We stayed in Europe after WW II, because Stalin wouldn't pull back, and the Cold War cost us billions. Yes, NATO troops were with us, but examine committed budgets from each of those countries compared to ours.

We managed to entangle ourselves along with the UN forces, in Korea. Three years later, and ever since, who is the overwhelmingling predominant military force there? Hint, it ain't the Australians....

NATO countries willingly went into Afghanistan with us, as Bush II neatly swerved around our Constitutional requirement that only Congress can declare war, by declaring he would follow UN sanctions and charters. How legal that move was, no one knows and heaven forbid the Fourth Estate would have the testicles to investigate.

Almost three full years after NATO allies withdrew, our president is re-committing troops to a strange cause. Like Vietnam (you remember that one, correct?) the landscape doesn't lend itself to ground troop battles. What is noticeable, is that, as of today, no other NATO nation has joined our president's announcement. Once again, America goes forth almost totally by itself, into the wilderness. The Military Industrial Complex is as strong as it's ever been.

Soon, American soldiers will start coming home in boxes, while a hard to find enemy dances around Eastern Europe and the Middle East. Meanwhile, the real enemy far closer to home, Islamic terrorist cells, rise up all over the globe raising havoc and bringing terror and death, all the while crying "we're innocent. We don't know how this could have happened. Please forgive our Imam. We didn't know he was a bad person."
Holy Crap.