They are inside their own country, and positioned relative to the expansive NATO threat and the Ukrainian nazi threat. And they have been invaded 3 or 4 times from that direction.
Next question?
LOL, what "expansive" NATO threat? Exactly what NATO army is threatening Russia?
Its also ridiculous to keep using Ruskie propoganda such as "Ukrainian nazi threat" since Ukraine is led by an elected Jewish President, Volodymyr Zelensky.