Get out and the battle will come back to us, just like the last time we ignored Afghanistan.
There is no head in a hole in the sand peace to be found here, that just will not happen.
Of course the war is winnable, indeed it is necessary we do not loose, by which I mean keeping the Taliban from controlling the country or being totally safe to export terror in large parts of the country.
This can be done two ways. A massive surge, clear and hold and attempt to build the democracy from Kabul outward, slowly giving Afghans the benefits of that and hoping the inter ethnic animosity (which is centuries old) will succumb to the lure of a better life, a long war with large cost but achievable with long term will power .
Or
Stop nation building, give Kabul financial support and arms, but also arm any other group who opposes the Taliban, including drug lords who know long term a Taliban victory would eliminate them, and use Special Forces and predator drones to relentlessly hunt the Taliban and Al Qaeda. Allow more violence but reduce our cost and keep the Taliban and Al Qaeda pinned down fighting a relentless war with a growing enemies list, this war we could fight for decades.
So the choice is between idealism or ruthless realism.
Surrender is not an option.
There will always be terrorism, true, but they do not have to control entire nations and plan major attacks at their leisure, nor does the Noam Chomsky theory that we we cause it hold.
It will come if we do nothing.
The Islamo Fascists have their own ideological motives that are not reactive, indeed the Taliban are proof of this. The US helped them (indirectly) against the Soviets (they did not exist as that group then, but the US help should not go unnoticed) and then left Afghanistan alone.
Still the Taliban harbored a terror attack on the US, because they have their own ideological motives.
Another example, one of Al Qaeda’s main grievances and the stated reason for the Bali attack (or in sympathy with it) was because Australia had reversed policy and allowed the Catholic population of East Timor decide their own future, let them leave Islamic domination.
So if you think we are the cause, you can only be correct in the one reason we are the cause, we will not submit to primitive Islamic domination.
That is a high price to pay for peace.
There is no way I am willing to pay it.
Send that defeatest bill back.