As the world inches towards tragic anniversaries of so far the only use of nuclear weapons in war to date, it is worthwhile asking whether there was really a need to drop atomic bombs on Hiroshima on August 6 and Nagasaki on August 9, 1945: In fact, there is ample evidence that the U.S. dropped The Little Boy and Fat Man on a nation that had been largely defeated and was trying to surrender, says Nuclear Age Peace Foundation president David Krieger.