Why would anyone invade Poland? I thought it is a successful, patriotic nation willing and able to defend itself. When they had their revolution, they had a leader of it who was ready to govern. None of that is true in Ukraine.
Are there areas of western Ukraine that would rather be part of Poland?
Are there areas of western Ukraine that would rather be part of Poland? Not many Poles left there today.
Ukrainians and Poles make good neighbors, but it's not a good idea to have them under the same roof.