After his speech, President Obama spoke and shook hands with several survivors of the atomic bombing of Hiroshima. He first shook hands with Sunao Tsuboi, who was a 20-year-old student at the Hiroshima Vocational School when the bomb fell. He was on his way to college the morning of the bombing. Mr. Tsuboi, a chairman of the Hiroshima branch of the Japan Confederation of A- and H-bomb Sufferers Or