[yongjik]

Carl Sagan was highly skeptical against the arms race theory. According to him: The Star Wars plan was nothing more than a boondoggle based on questionable technology, and the Soviet at that time correctly concluded that if it ever worked they just needed to have more missiles. The whole story is basically a retcon to explain why America wasted so much money on SDI that never went anywhere.

[kingofhdds]

Soviet Union was trying very hard to keep up with the US military advances - I know it for sure, because as an engineer my father was involved in such efforts. And, by the way, "just" producing more missiles wasn't easy thing to do also. So, Reagan's policy probably added a lot to Soviet troubles. I suppose Sagan simply needed to be publicly skeptical, because he was in different ideological trenches.