It would be kind of ironic if the war we thought would start WW3 just happens to still be going on while the actual WW3 gets started.
My nightmare scenario is Israel and Iran expands in to a war, then the US is going to have to decide how involved we want to be. That would get us an energy crisis, and BDS for real. Israel feels existentially threatened and gets a little reckless with their nuclear arsenal or starts threatening it and then Russia or China wants to find a way to assert their global leadership by having their own little proxy war with US’ greatest ally and the US and the West decides it is civilizational war time.
I really hope Israel picks a military target and goes small.