Karen Dawisha & S. Frederick Starr 
The International Politics of Eurasia: v. 3: The Politics of Religion in Russia and the New States of Eurasia [PDF ebook] 

First Published in 2015. This ambitious ten-volume series develops a comprehensive analysis of the evolving world role of the post-Soviet successor states. Each volume considers a different factor influencing the relationship between internal politics and international relations in Russia and in the western and southern tiers of newly independent states. The contributors were chosen not only for their recognized expertise but also to ensure a stimulating diversity of perspectives and a dynamic mix of approaches. This is Volume3 The Politics of Religion in Russia and the New States of Eurasia.