Reince Priebus, White House chief of staff, arrives for a joint press conference with U.S. President Donald Trump and Paolo Gentiloni, Italy's prime minister, not pictured, in the East Room of the White House in Washington, D.C., U.S., on Thursday, April 20, 2017. Gentiloni said they spoke about military expenses and the contributions each country must make toward collective security. Photographer: Pete Marovich/Bloomberg via Getty Images
