The question becomes one of politics: how much does each EU member care? I'm reminded about the old joke about the difference between ham and eggs being that the chicken is involved but the pig is committed.
Poland, Romania, and the Baltic states are "committed" in that they regard the risk of a Russian invasion as real, and have seen occasional incursions by Russian flights and even missiles. If it comes to a fight between self-defence and the deficit limit, they're just going to have to break the limit.
Germany, on the other hand, has been very comfortable taking Russian bribes and gas, as well as being uncomfortable with re-arming, so they've been lagging behind on the project.
Maybe there will be another "incident". France has already been reporting attempts of sabotage against their railway network.
The politics of Ukraine war is extremely complicate. After WW2 Ukraine got territories from Hungary (and they are still very mad because of this), Slovakia, Poland and Romania. Then Ukraine had very aggressive policies against the people from these territories and they mostly failed, these minorities speak Russian as the second language, not Ukrainian. This is not something that it is easily forgotten, people in the countries listed above still have family in Ukraine and have first hand experience of the situation.
I don't think that is an option of any sort. Wild guess is Putin bet was on Russia getting some territories opening the door for Hungary and Poland to do the same. No idea what is the atmosphere in Slovakia, but the recent surprise in the Romanian politics makes any prediction impossible. Well, he was wrong :)
That's insane. Of course it's an "option". No one in these countries (outside of a very tiny portion of wackos) cares about the current borders, or dreams of starting a war to move them.
No, full occupation of Ukraine is not an option that NATO will ever accept. With the current state of Russian military and economy, it is a very easy line to draw.
Poland, Romania, and the Baltic states are "committed" in that they regard the risk of a Russian invasion as real, and have seen occasional incursions by Russian flights and even missiles. If it comes to a fight between self-defence and the deficit limit, they're just going to have to break the limit.
Germany, on the other hand, has been very comfortable taking Russian bribes and gas, as well as being uncomfortable with re-arming, so they've been lagging behind on the project.
Maybe there will be another "incident". France has already been reporting attempts of sabotage against their railway network.