Serious stock-taking is in progress now among practitioners of whathas been called Sovietology, meaning studies of the Union of SovietSocialist Republics. The reason is that the field for the most part hadnot been expecting what happened in 1991: The USSR collapsed andwent out of existence as a unified state system governing a sixth ofthe world's territory, having allowed its East European empire tofree itself from Soviet dominance somewhat earlier.It might be said in defense of Sovietology that, by the beginningof the 1980s, it understood that economic and political crises werebrewing in the...