Ukraine makes WW3 less likely. If it was conquered quickly - that would make WW3 more likely (because Russia and China would estimate their chances of further conquest higher and would probably start something in Taiwan or Baltic states). Russia issued a statement just before 2022 invasion that demanded NATO back off from Baltic States, Poland, etc. If Ukraine fell quickly they could think they can force this by smal…
But if long running influence operations seem to be the area where Russia in particular owns the board.