Home Hotel security staff try to hold back members of the press as the car carrying United States Ambassador to the Philippines Sung Kim tries to leave the Ritz-Carlton hotel on June 11, 2018 in Singapore.<br>(Photo by Chris McGrath/Getty Images) Hotel security staff try to hold back members of the press as the car carrying United States Ambassador to the Philippines Sung Kim tries to leave the Ritz-Carlton hotel on June 11, 2018 in Singapore.<br>(Photo by Chris McGrath/Getty Images)

Hotel security staff try to hold back members of the press as the car carrying United States Ambassador to the Philippines Sung Kim tries to leave the Ritz-Carlton hotel on June 11, 2018 in Singapore.
(Photo by Chris McGrath/Getty Images)

U.S. President Donald Trump (L) blows out a candle on a birthday cake given him by Singapore’s Prime Minister Lee Hsien Loong (not pictured) on June 11, 2018 in Singapore, ahead of the historic meeting between U.S. President Donald Trump and North Korean leader Kim Jong-un.<br>(Photo by Ministry of Communications and Information Singapore/via Getty Images)
U.S. President Donald Trump (R) shakes hands with Singapore’s Prime Minister Lee Hsien Loong (L) on June 11, 2018 in Singapore, ahead of the historic meeting between U.S. President Donald Trump and North Korean leader Kim Jong-un.<br>(Photo by Ministry of Communications and Information Singapore/via Getty Images)