Nato didn’t expand or crossed “red-lines” the way you make it sound like.
The ex invaded Eastern European countries, including Ukraine, had been under Russian occupation for decades... they lived through hell. When the Soviet Russian system momentarily collapsed, those previously occupied nations suddenly regained their freedom. But at that point they had no army to protect themselves in case Russia decided to occupy them AGAIN...
That’s why all previously occupied European eastern countries by Russia ran to NATO for urgent protection.
Without NATO those eastern counters would already have been taken back by Russia. Proof : Ukraine wasn’t part of NATO - thus it was invaded by Russia!
Russia has no say in other nations way of life and how they manage their own defense systems.
You make bizarre assertions.