It also has to do with a veiled Russophobia that has never gone away...
Am I wrong?
I sense that to be present, yes, although nobody seems willing to admit to it openly.
This also points up another aspect of the "left-right" spectrum in that the left tends to be more internationalistic in its scope, whereas the right tends to be more nationalistic. In that sense, "right wing" and "left wing" can be viewed more in a relativistic sense.
For example, within the framework of the Soviet Union, Stalin was considered to be on the "right wing" of the Communist Party, as he emphasized "socialism in one country" which had a decidedly nationalistic bent to it. But it was also "internationalistic" of sorts, as the Soviet Union was a "nation" which was made up of many nations. So, it was kind of complicated in practice.
It's also complicated with NATO, as NATO is not a single "nation," so it can't be nationalistic in that sense. However, it does tend to have a certain cohesiveness and shared purpose influenced by a common defensive alignment and shared protection. So, they're driven to protect their own nations as much as any nationalist would, except they believe that an international alliance would be more effective than going it alone.
However, it also appears evident that there are some nationalists who do think in terms of going it alone and ostensibly wish to go their own way, without getting tied in to a permanent alliance. There's an air of xenophobia about it, where people get tied in to their own national identity, culture, and ways of living to the point where anything that doesn't fall within that or conform to their cultural values is deemed a threat.