US ambassador to Japan, John Roos (C), and Hiroshima Mayor Tadatoshi Akiba (L) pray in front of the altar for the atomic bomb victims at the Peace Memorial Park in Hiroshima, western Japan on October 4, 2009. Roos arrived in Japan on August 19 to replace outgoing ambassador Thomas Schieffer. Getty Images logo Getty Images 2 months ago

US ambassador to Japan, John Roos (C), and Hiroshima Mayor Tadatoshi Akiba (L) pray in front of the altar for the atomic bomb victims at the Peace Memorial Park in Hiroshima, western Japan on October 4, 2009. Roos arrived in Japan on August 19 to replace outgoing ambassador Thomas Schieffer.