"World politics was an extension of Soviet politics, which was in turn an extension of Stalin's preferred personal environment: a zero-sum game, in which achieving security for one meant depriving everyone else of it."—Lewis Gaddis, American historian

Based on the above quote from historian Lewis Gaddis, it can be determined that he believes that

Stalin held little regard for individual rights
national security supersedes liberty
Stalin acted on behalf of his personal environment
the Warsaw Pact was a union of one

Question

"World politics was an extension of Soviet politics, which was in turn an extension of Stalin's preferred personal environment: a zero-sum game, in which achieving security for one meant depriving everyone else of it."—Lewis Gaddis, American historian

Based on the above quote from historian Lewis Gaddis, it can be determined that he believes that

 Stalin held little regard for individual rights
 national security supersedes liberty
 Stalin acted on behalf of his personal environment
 the Warsaw Pact was a union of one