To have a WW, are ever a War, we need two almost equal forces, we have a unipolar world now, so NO chance for WW3,
Anti US forces lobbied but they stand too little, as of now,

probably once world order changes in next 20 yrs, if China survives & remain united, we may see something, (but Chinese are smarter guyz, they'll never go for a large scale self-destructing war)

WW needs one Craziest (but powerful) guy, to start and many Crazier reactionaries, to follow it,

We have a few of them,craziest, but none of them are powerful :)