An excellent small book! If you are interested in the current crisis of the euro, and in what will happen to the European Union, this lucid and clear analysis is a must-read. It describes four possible paths that the European Union might take in the future, with their pros and cons. It does not hide from reality, describing objectively the present weaknesses of the EU, the risks of irrelevance or even of a splitting up of the EU in the future, and the necessity to react. An important contribution to the economic and political debate on the (unavoidable?) "two-speed" Europe.