Complex sentence: In May 1992, he was approached by KGB defector Anatoliy Golitsyn, who supported Story's analysis in "Soviet Analyst", and handed over to Story his memoranda to the CIA, which Story edited and published as "The Perestroika Deception" in 1995.
Split into simpler sentences: In May 1992, Story was approached by KGB defector Anatoliy Golitsyn, who supported Story's analysis in "Soviet Analyst". Golitsyn handed over to Story his memoranda to the CIA, which Story edited and published as "The Perestroika Deception" in 1995.