This is the best option IMO. Afghanistan is not Iraq. Iraq had many people that wanted to help themselves, had some sort of national pride, and had natural resources they could use to make their country viable economically. Afghanistan, on the other hand, has very few citizens who can see past their own nose, barely even has a recognizable national flag, and has nothing by poppy to offer to anyone. Nothing we do over there will impact any of these things. We could get rid of the poppy and offer wheat subsidies instead, but, their people have zero interest in that and we don't have the guts for it. Hopefully Karzai is a douche about the SOFA and we can't get immunity. That was the dealbreaker in Iraq. I think Pres Obama would be secretly okay with no SOFA just like he was in Iraq. That is the easiest way for him to save political face and Karzai to look strong to his people.
US may leave no troops in Afghanistan, officials say | Fox News