Comment by wongarsu

Those cover Russia's motivation, which is indeed strong. You can add that Putin wants the glorious Soviet Empire days back, and that without additional buffer zones Russia is very vulnerable to land invasion (in Summer). Russia has plenty of reasons to conquer much of Europe

But I don't see Russia's capability to do so. Their kleptocracy has impoverished the country and has repeatedly lead leadership (including Putin) to overestimate their own capabilities. Male population faces attrition from war and alcoholism. Leadership has a habit of dying in mysterious accidents or falling out of windows, reducing the amount of experienced leaders available and discouraging anyone with a brain from rising up too far. And they are barely able to advance in Ukraine.

There are legitimate concerns that Russia might attack other countries once the Ukraine war concludes. They might even make some initial territorial gains because they are in full war economy while Europe has only scaled up enough to support Ukraine, and has depleted ammunition stockpiles. But I don't see them getting very far