Good book by neo-con (not that I expect say, Carrol to read it!) with lots of reflection by ex-Soviet, Central and Eastern European Communist apparatchiks and intellectuals.
http://www.yale.edu/yup/books/076207.htm POLITICAL WILL AND PERSONAL BELIEF The Decline and Fall of Soviet Communism by Paul Hollander.
For anyone that has visited Cuba, read his, "Political Pilgrims, " now in it's 4th edition.
http://www.firstthings.com/ftissues/ft9506/reviews/briefly.html Michael Pugiiese, http://ideologiesRus.com