On a cold spring day in April, Adolf Hitler was born. Or at least that’s the official story. You know the saying, if you went back in time to kill Hitler as a child, you wouldn’t really be killing him. The mid-wife/nanny at the time would go steal a baby from someone else and raise it as young Adolf instead. So in essence you created Hitler, that makes you worse then Hitler, you time traveling monster.
Luckily though, time travel doesn’t exist in this universe. In other universes World War III was started as a time-war. Not a time-bomb, a time-war. It’s pretty complicated and I don’t want to go into it right now, but suffice to say, things got messy.