started under greg suhr, and he's everywhere committed to making sure that happens. >> stewart: vivian ho from the "san francisco chronicle," thanks so much. >> thank you. >> this is pbs newshour weekend, saturday. >> stewart: after his visit to vietnam this week, president obama will continue on to japan, but not everyone is pleased with this plan. the newshour's megan thompson has more. >> reporter: yesterday, visitors at the peace memorial museum in hiroshima examined somber reminders of the catastrophic event 71 years ago that still grips the nation today. on august 6, 1945, the u.s. dropped an atomic bomb on hiroshima, killing 140,000 people. a second bomb was dropped on nagasaki three days later, killing another 70,000. japan surrendered on september second. since world war two, no sitting american president has visited hiroshima, until now. >> the president intends to visit to send a much more forward-looking signal about his realizing the goal of a planet without nuclear weapons. >> reporter: but some japanese are already disappointed with obama's visit. he is not expected to meet