Which of these leaders is willing to spend their own blood and treasure in a new European war? These people don’t even pay their fair share for the existing defense of Europe.
Both the Balt republics and Poland have sizable armies, and volunteer reserves. To them Russia is an existential threat, and they had faced it before.
They are, however, no match to the Russians. This is why they sought NATO membership and received it when W. Bush was president.