After Germany's surrender in 1945, some scientists question the bomb's relevance. Oppenheimer believes it would end the ongoing Pacific War and save lives. The Trinity test is successful, and President Harry S. Truman orders the atomic bombings of Hiroshima and Nagasaki, resulting in Japan 's surrender. Though publicly praised, Oppenheimer is guilt-ridden and haunted by the destruction and mass fatalities. After Oppenheimer expresses his remorse to Truman, the president berates him and dismisses his plea to cease further atomic development.