The book addresses the relevant experience of the countries from Central and Eastern Europe with transitional constitutionalism, mapping out the significance of European and Eurasian integration for protecting the rule of law in the post-Soviet space and identifying the constitutional implications and challenges of the EAEU and the new generation of Association Agreements. It also provides detailed country reports on national constitutional orders in the post-Soviet space and their adaptability to regional integration projects, authored by leading academics from the countries concerned, providing a number of general reflections about the evolution of post-Soviet constitutions in light of European and Eurasian integration projects.