This new contribution from Kaarlo Tuori and Klaus Tuori, offering an innovative constitutional analysis of the Eurozone crisis, is an important addition to the series Cambridge Studies in European Law and Policy. Combining expertise on law, theory and economics, the authors are able to open our eyes to the many aspects of the Eurozone crisis and its ramifications for societies and polities. They want to take us beyond thinking about the crisis merely as a financial crisis, a crisis of the banking sector or a threat to public debt, and to give it a broader public order and constitutional perspective. The Eurozone crisis goes to the very heart of the European constitutional order, understood in a multi-perspectival manner to incorporate both the legal order sustained by the EU treaties, and also the systems of the Member States. The Eurozone crisis thus entreats us to consider also issues of democracy and transparency, as well as issues about the values which underpin our societies in the early twenty-first century including issues around security in its widest sense. Tuori and Tuori, through a historically and conceptually grounded analysis, show how these issues are intimately linked to each other. We warmly welcome this volume to the series.