A still image taken from video shows U.S. President Donald Trump and first lady Melania attending a ceremony commemorating the six million Jews killed by the Nazis in the Holocaust, in the Hall of Remembrance at Yad Vashem Holocaust memorial in Jerusalem May 23, 2017. Government Press Office via REUTERS TV ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS.