“We didn’t want MacArthur and others saying the war could have been won without the bomb,” Groves said.(..)
That most people in the United States still believe the “saved lives” rationale to be true is because of decades of this censorship and myth-making, begun by President Harry Truman, who said Aug. 6, 1945, “Sixteen hours ago an American airplane dropped one bomb on Hiroshima, an important Japanese Army base. … That was because we wished this first attack to avoid, insofar as possible, the killing of civilians.”