That's a great name for the new entity. Three seas works well in Slavic languages, and is neutral.
Austria should be replaced by Ukraine and Moldova, though. Austria definitely doesn't belong.
Ukraine and Poland really do belong together. Ukraine is more faithful to traditional Polish culture than Poland. Poland westernized a lot since joining the EU and NATO, and Ukranian cultural influence would be awesome. Conversely, Ukraine could use some economic assistance, where Poland's economy has exploded, for much the same reason of NATO/EU.
Austria should be replaced by Ukraine and Moldova, though. Austria definitely doesn't belong.
Ukraine and Poland really do belong together. Ukraine is more faithful to traditional Polish culture than Poland. Poland westernized a lot since joining the EU and NATO, and Ukranian cultural influence would be awesome. Conversely, Ukraine could use some economic assistance, where Poland's economy has exploded, for much the same reason of NATO/EU.