Is Our Foreign Policy Establishment Learning?

The main reason why there is so little learning from foreign policy failure is that there are strong incentives not to learn.

Stephen Walt argues that withdrawing from Afghanistan will help the U.S. to focus on truly vital interests. He concludes:

No great power is infallible, but the US has a long history of setting priorities and achieving ambitious but sensible goals. Unfortunately, its foreign policy over the past three decades has raised serious doubts about American judgm…