Robert Oppenheimer. J. Robert Oppenheimer ... So it is often said that Harry Truman learned about this for the first time when he became president, but he knew a little bit about it from the ...

Robert Oppenheimer, widely known as the "father ... understand the difference in the values of former US President Harry Truman, who authorized dropping the atomic bombs, and those of his grandfather.

Robert Oppenheimer ... After the war, Oppenheimer chaired the U.S. Atomic Energy Commission. He opposed developing an even more powerful hydrogen bomb. When President Truman finally approved ...