After that, there would be Intermarium around Poland.Intermarium.
In Lithuania, Poland is liked as much as devil in Częstochowa. (hint: hated). This is partially because Poland is still trying to polonize Lithuania.
Czech Republic - Czechs dislike Poland, for example because it cooperated with Nazi Germany just before WW2 and captured some Czech land. Czechs also call Poles crude and arrogant. While Czechs may share Poles' general dislike of refugees and foreigners, they would never accept Polish hegemony in the region.
Ukraine - love it or hate it, many Ukrainians dislike Poles and feel Poland betrayed Ukrainian cause (independence). Those sentiments are especially common in western Ukraine. As for the eastern parts, those are far from Poland, close to Russian Federation and therefore easy to shower with Russian propaganda.
Serbia - if you ask a Polish high school kid, he will say: "Where is Serbia ?"
Hungary - far from the geopolitical crashzone. When Russia attempts to expand west, it doesn't need to go through Hungary, but through Poland. That's why Hungary can afford to get in bed with Russia.
So, Crow. Do explain
how is Poland supposed to improve its relations with Lithuania, Czech Republic and Ukraine ? Those are Poland's neighbors who dislike Poland quite a lot. How is Poland supposed to find common interests with countries like these, especially Serbia and Hungary ? Intermarium won't stick if it has no reason to stick. And what's the reason to keep it ?
Sweden is a better case, because we do share geopolitical interests with Sweden, but the two countries are VERY different. Sweden prides itself as a leftist, inclusive, diverse, feminist (...) state.
It's really sad PiS is promoting the idea of Intermarium, because it has no future.