Meanwhile, we and our partners have already evacuated more than 100,000 Afghans and others who feared for their lives under Taliban rule, a truly remarkable logistical achievement under daunting circumstances. We owe a great debt to these people and we should continue the airlift as long as we can. But that won’t be forever, as conditions deteriorate — witness the deadly bombings on Thursday outside Hamid Karzai International Airport — and not everyone who desperately wants to get out will be able to do so. That is tragic. But it would be true, I believe, whenever and however the U.S. mission ended.