"The President enjoys an historic level of popularity among the Japanese people," the cable explained. "(Yabunaka) underscored, however, that both governments must temper the public's expectations."
Obama had no plans to apologize for Hiroshima, a senior White House official told ABC News Wednesday.
On Aug. 6, 1945, the United States launched the world's first nuclear attack on any country with "Little Boy," an atomic weapon that is thought to have killed some 70,000 Japanese instantly in the blast. Another 70,000 later died from radiation exposure.