Joseph Biden actually said...

To ISIS-K, we are not done with you yet. To those who wish America harm, to those engaged in terrorism against us or our allies, know this. ...

The choice was leave or escalate. There is no such thing as low risk, low cost, low cost war.

If there are American forces -- if there's American citizens left, we're going to stay there and we will get them all out.

I respectfully disagree.