The conversation between human and AI assistant.
[|Human|] Given this reference text about Gorbachev, tell me whether he was an ally of Yeltsin and Putin.
[|AI|] According to this passage, Gorbachev was neither an ally of Yeltsin nor of Putin. In fact, he was a vocal critic of both of them.
[|Human|] 
Given this reference text about Gorbachev, tell me whether he was an ally of Yeltsin and Putin.