"NATO was constructed on the - with the reason, whether one believes it or not, that it was going to defend Western Europe from Russian assault. Once the Berlin Wall fell and the Soviet Union was beginning to collapse, that reason was gone. So, first question: why does NATO exist?" - Noam Chomsky
NATO's purpose was never the ones that they proclaim openly. NATO is an American pet project, where the US treat their allies just a bit better than slaves. And this is why powerful countries such as Turkey are increasingly turning rebellious (by ordering Russian air defense systems). Ever since the collapse and disintegration of the USSR in 1992, I don't think that there have been a single positive contribution from the NATO. All they have done is to bomb third world nations such Serbia, Libya and Iraq to rubble.
i am not convinced that powerful countries will let the weak countries come forth
The whole power game is a strange act which a normal human being is unable to understand - had anyone watched Jakie? the film made on JFK's assassination and life of his wife after his death. She stopped meeting people and lived in isolation after the death of her husband