Quite a few former USSR member countries joined NATO after its dissolution in 1991. Why wasn't Russia one of them? Ukraine still isn't a NATO member, either.

Why are Russian missiles aimed at other countries, and why are missiles in other countries aimed at Russia?

Why are there so many enemies among humans?

Quote
What's it all about, Alfie?
Is it just for the moment we live
What's it all about
When you sort it out, Alfie
Are we meant to take more than we give
Or are we meant to be kind?
And if, if only fools are kind, Alfie
Then I guess it is wise to be cruel
And if life belongs only to the strong, Alfie
What will you lend on an old golden rule?

You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.
R. Buckminster Fuller