Teller wasn't one of the major players in the Manhattan project. I doubt
his presence in Germany would have materially effected a half-hearted effort
to achieve the bomb. His fatherhood of the H-bomb is somewhat exaggerated.
Certainly he was a big proponent of the weapon, but it was Hans Ulam who
figured out the concepts that made the bomb practical and scaleable. When
Teller and his group splintered off from Los Alamos to develop weapons to
his theoretical designs, the results were not spectacular.

R / John

He could have stayed in Germany and given Hitler the atom bomb. Be
thankful for
little things.