How would a surviving Second Polish Republic have handled the collapse of the Soviet Union?

[Futurist]

Certainly against Czechoslovakia, because Czechoslovakia was an enemy of Poland, but not against Romania, an ally.

What about against Yugoslavia?

[Futurist]

Prometheism and Intermarium were dead by the end of the thirties.
Generally, Poland would regard such countries as a threat to her Eastern Borderlands.

Poland did not regard a Petliura-led Ukraine as a threat to her Eastern Borderlands. Why would an independent post-Soviet Ukraine be a threat to Poland's Eastern Borderlands when the quality of life in Poland's Eastern Borderlands is likely to be astronomically higher than the quality of life in an independent post-Soviet Ukraine?

The problem with the intermarium concept was that it was impossible without Czechoslovakia and I would imagine Polish decision-makers were mostly aware of this obvious fact by the 30s - even if they might not care to admit it. At the same time, while there were clearly groups in both countries that were in favour of Polish-Czechoslovak co-operation, alliance or even union, the suicidal intransigence of others on both sides of the border made this politically impossible.

The pragmatic thing on Poland's part would have been to drop the Teschen question in exchange for Czechoslovak consent to some kind of Intermarium, no? Ditto for Poland and Vilnius--offer to give it to Lithuania in exchange for Lithuanian consent to some kind of Intermarium. Sounds like a good deal for Poland, no?

But of course using the same logic, Weimar Germany should have aimed to formalize the existing status quo in the Polish-German borderlands in exchange for Polish consent to some kind of Mitteleuropa, which really is just an Intermarium with Germany added along to it.

[wm]

The Poles offered an anti-German alliance in exchange for dropping the Teschen - the Czechs rejected it.

What about against Yugoslavia?

Too far away to be of any use and a friend of hostile Czechoslovakia, an enemy of pro-Polish Hungary.

[Futurist]

Thanks, wm! And Yeah, it is quite interesting how Poland was close friends with Hungary even though Hungary was a defeated WWI revanchist power. Poland was lucky enough to be friends with both Hungary and Romania even though the two of them hated each other!