There will never be a WW3 - too many high-yield nuclear weapons among the super powers. All that would get you is Mutually Assured Destruction(MAD) where there are no winners & Earth is pretty destroyed with nuclear winter. Humans want to fight to win a war - not commit suicide. Only fools fight in a burning house.
It was 21 short years between WW1 & WW2 (1918 - 1939). It's been 75 yrs since the end of WW2 & no WW3. Thank the creation of nuclear weapons, which has & will continue to prevent WW3.
So, everyone chill out & find something else to worry about (how food inflation?!?).