A police officer guards the entrance of the international media center Sunday, June 10, 2018, in Singapore ahead of the summit between U.S. President Donald Trump and North Korean leader Kim Jong …

A police officer guards the entrance of the international media center Sunday, June 10, 2018, in Singapore ahead of the summit between U.S. President Donald Trump and North Korean leader Kim Jong Un on June 12. (AP Photo/Wong Maye-E)