You're not going to like this answer but he didn't say Soviet Union because he didn't need to. Everybody understood that 'communism' was 'THE Global Conspiracy' ever since McCarthyism took of.
Check out A conspiracy so immense : the world of Joe McCarthy by David Oshinsky to learn a little of what the attitude of the time was like.
Also sorry for the previously snippy response.
Yes... A terrible outcome that we all want to avoid...