It is crunch time on Afghanistan, so here’s my vote: We need to be thinking about how to reduce our footprint and our goals there in a responsible way, not dig in deeper. We simply do not have the Afghan partners, the NATO allies, the domestic support, the financial resources or the national interests to justify an enlarged and prolonged nation-building effort in Afghanistan.

Thomas L. Friedman

I base this conclusion on three principles. First, when I think back on all the moments of progress in that part of the world — all the times when a key player in the Middle East actually did something that put a smile on my face — all of them have one thing in common: America had nothing to do with it.

America helped build out what they...