US President Barack Obama (L) and French Ambassador to the United States Gerard Araud shake hands during reception for the diplomatic corps in the East Room of the White House July 15, 2016 in Washington, DC. Obama spoke to the diplomatic corp calling the deadly truck attack in Nice as a "tragic and appalling" on freedom and pledged firm US support for France. / AFP PHOTO / Brendan SmialowskiBRENDAN SMIALOWSKI/AFP/Getty Images