If Russia had become a member of the North Atlantic Treaty Organization at that time, it would have changed as follows:
1.Political significance: Russia became a member of the North Atlantic Treaty Organization (NATO), whose membership extended from the West to Eastern Europe and Russia, profoundly changing the political situation in Europe. This would change the balance of power in the North Atlantic Treaty Organization and draw attention and resistance from other regions.
2.In terms of the military, Russia, having participated in the North Atlantic Treaty Organization, is likely to develop more military cooperation with other countries internationally to deal with potential security problems. Doing so would strengthen the North Atlantic Treaty Organization, but it would also cause concern and resistance elsewhere.
3.On the economic and trade front: Russia's membership in NATO can strengthen its economic ties with Russia and promote economic integration in Europe. This may help Europe's economic development, but it will also have negative consequences for others.
4.Russia's membership in the North Atlantic Treaty Organization (NATO) has significantly changed the geography of the region and has given rise to new situations in the region. This will have an impact on major countries like the United States and China.
All in all, if Russia can become a member of NATO at that time, it will have a profound impact on the political, economic and security situation in Europe and the world. The reality, however, is that Russia has failed in many ways.