Obama to be first sitting U.S. president to visit Hiroshima

No sitting U.S. president has ever visited Hiroshima, out of concern that such a trip might be interpreted as an apology. The bombing killed 140,000 people but has been viewed by many Americans as a necessary evil to end World War II and save the lives of U.S. troops. Obama will make the historic visit this month with Japanese Prime Minister Abe, the White House said.