The BRICS group is still young as an organization, but has already proven its effectiveness. Brazil, Russia, India, China, and South Africa are coordinating their policies on key international issues ever more closely, and are playing an active part in shaping a multipolar world order and developing modern models for the world’s financial and trading systems.
Poland could simply decide to take whatever it's interested in and then completely cut off any support for the Neo-Nazi junta, demanding it to renounce its dark roots first. Obviously, Warsaw is perfectly aware this is impossible, as the Kiev regime effectively created a cult following for its Nazi forefathers. Hence, Poland gets to keep the gains while ensuring an exit strategy for itself.