I had the great fortune while at an Executive Education course at Harvard Business School last week to participate in a case discussion with Professor Rawi Abdelal , an expert in international political economy. We studied a case concerning the U.S. current account deficit and the various causes and effects of the issues now affecting the global economy. It would be hard to put in a nutshell everything that was covered, so I'll just share what I left the room thinking about. First, the fact that the savings rate in the U.S. is zero is extremely unhealthy and Americans need to start saving more (understandably hard to do when incomes are stagnant/falling and unemployment is rising). Second, solving the problems will be incredibly difficult and complex because it is likely to require close coordination of many countries around the world and such coordination is difficult under the best of circumstances; in addition, for Americans to save more, we will need to spend less - which doesn