Maclean , unlike Burgess , assimilated into the Soviet Union .
Maclean , unlike Burgess , became a respected citizen , learning Russian , earning a doctorate and serving as a specialist on the economic policy of the West and British foreign affairs .
Maclean , unlike Burgess , assimilated into the Soviet Union and became a respected citizen , learning Russian , earning a doctorate and serving as a specialist on the economic policy of the West and British foreign affairs .