From what I read, Putin is not insane in a strict sense, but he based his decision on wrong information (Ukrainians hate their government and will not put up a

From what I read, Putin is not insane in a strict sense, but he based his decision on wrong information (Ukrainians hate their government and will not put up a fight). He would probably not get the same wrong information about Finland and Sweden - it would be much less plausible and the history-based Russian biases don't exist. Well, I still see the point for Finland and Sweden.