It's not World War 3. It's just two increasingly overlapping unsolvable wars involving two increasingly coherent geopolitical blocs consisting of dozens of countries spanning three continents, most major nuclear powers holding 95% of global nuclear stockpiles and the vast majority of global military spending and resources, with nuclear-capable cruise, ballistic, and hypersonic missiles flying back and forth, attacks…
Are there enough nations on Russia's side to call them a bloc? It seems like almost everyone is supporting Ukraine.
Iran is even more closely linked. Arguably the real reason for the American attack on Iran is to reduce their contribution to the Ukraine conflict.
Plus Russia's various Toadies (which included Hungary, an EU nation, until recently)... It's a pretty sizeable bloc.
It's not yet an all out Axis and Allies situation, but it's definitely not just Russia against the world.