Take a look at the polling data here (from May 2022; you have to download it):
Nowadays even southern and eastern Ukrainians are extraordinarily hostile towards Russia, with support for Eurasian Economic Union membership not even reaching 10% in both of these regions. And even in both southern and eastern Ukraine, nowadays a majority of the population would vote to join NATO by double-digit margins.
With that level of hostility towards Russia, if Russia will actually succeed in conquering huge parts of Ukraine, most of the population in those regions will enter emigrate or become fifth columnists and thus become a perpetual problem for Russia. When a whopping 80% of Ukrainians support EU membership over EEU membership, any Ukrainian who will want an immediate improvement in their quality of life would obviously prefer to live in the EU than to live under Russian or under Russian puppet rule.
Public Opinion Survey of Residents of Ukraine
www.iri.org
Nowadays even southern and eastern Ukrainians are extraordinarily hostile towards Russia, with support for Eurasian Economic Union membership not even reaching 10% in both of these regions. And even in both southern and eastern Ukraine, nowadays a majority of the population would vote to join NATO by double-digit margins.
With that level of hostility towards Russia, if Russia will actually succeed in conquering huge parts of Ukraine, most of the population in those regions will enter emigrate or become fifth columnists and thus become a perpetual problem for Russia. When a whopping 80% of Ukrainians support EU membership over EEU membership, any Ukrainian who will want an immediate improvement in their quality of life would obviously prefer to live in the EU than to live under Russian or under Russian puppet rule.