Once again, Cohen and his mentor, John Mearsheimer, conveniently ignore facts.
One, Gorbachev himself confirmed there was never any promise by the US or NATO not expand eastwards.
Two, that beginning in the 1990s with the Partnership For Peace initiative, Russia had every opportunity to coordinate and even integrate its armed forces with NATO.
Third, in 2004 Putin himself requested the NATO Sect’y General, Lord Robertson, to invite Russia to become a member of NATO. Robertson informed Putin that NATO membership is not by invitation, but rather by application and that there was no impediment for Russia to undertake the application process. Putin however did not feel that as a permanent member of the UNSC and nuclear super power that Russia should be forced to submit an application like any other non founding member of the Alliance.
Four, Putin knows full well that NATO is a purely defensive alliance and poses zero threat to Russia’s security.
Cohen lives in a world of ideological make believe and probably believes that Russia remains the proletarian paradise of Soviet times. FuCa, on the other hand, lives with his head up his arse.