Don't call it WW3 until/if Iran becomes an active player, or PRC goes into a shooting war with Taiwan.
Though considering that the mullahs of Teheran have resorted to taking foreign hostages, thus engaging in actual hostage diplomacy (and this has been kept under weaps by the diplimatic circuit & state department for at least a year), I'm worried that this may not be far off.
And if/when that happens, a blockage of the Strait of Hormuz also has the potential to make the world look very different - not least because Biden has nearly drained the SPR, leacing the US historucally little buffer to ward off crude shortages.