Over at PV@Glance, Andrew Kydd argues against the Ryan's critique of the administration's Afghanistan policy. Among other things, he raises concerns about the claim that announcing a deadline will encourage the enemy to keep fighting. So far as I know, Kydd is right that we don't have any existing models that speak to this, but I think he's mistaken (as he acknowledges that he might be) when he speculates that this result could not emerge from the simple sort of model that the Ryan critique appears to be based on.
I am a political scientist who studies international relations. My interests include international conflict, domestic politics, bargaining theory, formal theory, and the empirical implications of theoretical models.