Iran has a strong stance to significantly increase influence in the Middle East if not restrained: they have many way (not just Hormuz) to project power on oil countries, and essentially force them to switch sides.
Those zany kids!
Putin cannot play the part Wilhelm played in 1914 because Russia has very little power.
Xi Ping cannot play the part Wilhelm played because he is too smart (he is one of the shrewdest and smartest leaders rn). If Xi Ping starts to lose it, then yeah, we may have WW1. Until then this is a very different situation.
It's a very extreme case, but it would get extremely messy. Putin on his own is something Europe should easily be able to handle as long as they've got Ukraine on their side. Trump's erratic disruptive attacks will hopefully end at some point. I'm not worried about Iran at all, except internally.
500+ million people and corresponding economy needs Ukraine to protect themselves? this is just plain pathetic or what's worse proof that the EU would fight Russia to the last Ukrainian
Even a victorious war is destructive. I'd like to do without, but I am just a random hobbit in this regard.