And We Won't Come Back 'Till It's Over Over There

The US may soon go the way of Russia, Britain, Persia, the Mongols, and Alexander the Great.
For whatever it is worth, if we do leave, we have the one consolation of being the only country asked to leave, and not forced out in a river of blood.

Afghanistan is asking us to go.
It’s better, I suppose, than, in a fray,
If they had asked us, suffering, to stay,
Revealing weakness, and impending woe.
We’d leave it easier than all before
Had left the country – Russia; or the Brits,
With Elphinstone retreating to the pits
That soon would be his grave; and many more –
The Persians, or the Mongols, or the Greeks.
The nation strips invaders of resolve,
And, forcing all their honor to devolve
To fighting for survival, then it seeks
To turn to be the way it was before.
I hope we don’t leave blood upon the door.
(A curse upon the Taliban, and war.)