Obama 1st serving US Prez to visit Hiroshima 
US President Barack Obama will visit Hiroshima during a trip to Japan and Vietnam later in May, in the first visit to Hiroshima by a serving US President. Obama will be accompanied by Japanese Prime Minister Shinzo Abe when he visits the city, the White House said. The atomic bombing of Hiroshima in 1945 killed 1,40,000 people.