"This is where any responsible U.S. leader and especially the president has to be very careful not only in what he or she says but in what he or she does, because you don’t want to put an ally in that kind of a position. Of course if Mr. Trump threatens the stability of the U.S.-Korea or U.S.-Japan alliance, Japan and Korea will have to recalibrate what is in their best interests vis-à-vis China and the rest of the world, but they don’t want to be put in that position, and the United States certainly—it is not in our interest—to put them in that position."
"The president is not going to Hiroshima to apologize, nor do the people of Hiroshima want or expect him to do so. This visit is about the present and the future. [Hiroshima offers] the best platform to highlight the value of U.S. alliances, the perils of nuclear proliferation, and the need for ongoing deterrence against rogue actors."
Los Angeles Times