At that time, America was strong, and Russia no longer decided anything in international politics, it was a pro-American regime. The Warsaw Pact was no longer de facto. But at that time NATO had a different meaning, the meaning of complete US dominance in Europe. Now the policy of Eurocentrism has turned on, and Europe can crush NATO under itself. Now NATO is not directed against Russia, Russia is playing on the side of Europe against the United States.
Until 2014, Russia was afraid of NATO expansion, at that time they announced the possibility of an asymmetric strike and the threat of an anti-missile defense stationed in eastern Europe, now everyone has forgotten about it. Nobody cares about missile defense.