The Maastricht Treaty, signed in 1992 and ratified in the following year, is widely seen as a landmark in the evolution of the European Union. It introduced int

This book provides the first in-depth account of how European Union opt-outs and differentiated integration work in practice.

Far from displaying a uniform pattern of integration, the European Union varies significantly across policy areas, institutional development and individual coun

This insider's guide to a topical issue is designed to be of use to students, academics, policymakers and commentators alike. It contains extracts from document