>Russia or Ukraine can win the war.<
You’re out of your mind.
The UKES have won some impressive battles against the RUS Black Sea Fleet, but to regain Crimea they’d need to be able to launch a huge amphibious landing, an extremely difficult operation way beyond their capabilities in terms of men and ships.
And attacks on RUS infrastructure are pinpricks given RUS size and resources.
Yevgeny Prigozhin could have taken Moscow.