Should The U.S. Stay In Afghanistan?

Since it is perfectly clear that we should have put all our energies into Afghanistan rather than starting an irrational, fruitless and distracting war in Iraq, it's easy to conclude that we now ought to go back and finish the job in Afghanistan. But the conclusion doesn't actually follow. Though we should've done it then, it does not follow that we ought to do it now. We may have missed our window, and we may have expended too much on the irrational war to now fight the rational one. It ought to remain an open question at this point.

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