As someone interested in politics, I am struck by 'what countries do.' Obviously (and, I think, as I've been re-reading especially Ricardo, helpfully), individual (& corporate) agents in countries act, by and large. But of course the laws of the country set boundaries, sometimes quite severe, within which agents can act. And, I wonder -- when a country goes to war, do we still conceptualize it as individuals acting, or is that a case when countries act? Peter G. Stillman