[dx87]

I think the two main considerations are the large number of countries that make up NATO allow it to seem very effective on paper, but in reality it'd be very difficult to coordinate the contributions of every country, especially considering the language and cultural barriers among members. It'd probably be incredibly inneffecient to try and lead the NATO members as a unified force. Another consideration is that even though NATO could easily win a war with Russia, member states probably want to present such an overwhelming military force that a war with Russia never breaks out in the first place.