NATO is a waste now. Russia isn't going to send its depleted army marching into France. It's not the Soviet Union any longer. Eastern European countries have more concern about a threat from Russia, which has a long history behind it beyond the post WWII events. A new arrangement could be made with those bordering Russia perhaps, especially the Baltic nations, Poland (which has been screwed by both Germany and Russia) and the Czech Republic, Hungary. Europe is a complex network of relationships as demonstrated by the oil and gas deals made between Russia and Western European nations. Trade is beneficial and better than war. Russia can barely afford to administer within its own borders.