1917 1964-1991 1991 communismbyregion democracies diplomaticrelations easterneurope economicconditionsineurope europe formersovietunion general government history holocaust holocaustbiographies jewishhistory lithuania militarypolicy miscellaneous miscellaneoushistory nationalsecurity northatlantictreatyorganization personalnarratives poland politics post-communism republics russia soviethistory unitedstates