

It also means that russia can’t unilaterally claim all of Ukraine, other countries can say no…it works for everyone. Welcome to the multipolar world too, russia.
And let me repeat: if the only thing other countries can do to stop anyone’s actions is war and countries just ignore borders, then it will be an extremely unstable system, like in the 17th century. Bipolar is more stable, like in the cold war. Unipolar is relatively stable, but there is no accountability, like in a 1-party system.
What counts is what is convenient to you, apparently. That is why multipolarity is a royal mess without strict rules, everyone thinks they can do whatever they want. Read some history.