A wonderfully written, thoughtful contribution to the ongoing discussion of EMU reform... The book is absolute first-class state-of-the-art EMU literature. Developments since its publication (such as Gauweiler and the BVerfG subsequent ruling of 21 June 2016) do not reduce its value at all. Rather, the reader will be in a position to better assess the importance and effects of these decisions. In sum, the work is ideal reading for EU constitutional lawyers interested in how the euro area crisis affects them and for EMU lawyers interested in how constitutional law is relevant to EMU. For both, it is a 'must'!