‘NATO expansion and the origins of Russia’s invasion of Ukraine’
https://responsiblestatecraft.org/2022/11/18/nato-expansion-and-the-origins-of-russias-invasion-of-ukraine/
Countries in central Europe petitioned to join NATO to get protection from Russian expansion.
Russia’s action in 2008, 2014 and 2022 process that Romania, Poland, Latvia, Bulgaria Estonia etc were right yo join NATO.
Russia invades its non NATO neighbours