Hillary Clinton, 2016 Democratic presidential nominee, waves while arriving on stage during the Democratic National Convention (DNC) in Philadelphia, Pennsylvania, U.S., on Thursday, July 28, 2016. Division among Democrats has been overcome through speeches from two presidents, another first lady and a vice-president, who raised the stakes for their candidate by warning that her opponent posed an unprecedented threat to American diplomacy. Photographer: Daniel Acker/Bloomberg via Getty Images
