Flag draped transfer cases with the remains of American soldiers repatriated from North Korea are seen during a ceremony after arriving to Joint Base Pearl Harbor-Hickam, Honolulu, Hawaii, on August 1, 2018. RONEN ZILBERMAN/AFP/Getty Images
U.S. President Donald Trump speaks alongside Vice President Mike Pence, and Secretary of State Mike Pompeo during a meeting with NATO Secretary General Jens Stoltenberg, at the White House on May 17. (Andrew Harrer-Pool/Getty Images)
U.S. President Donald Trump takes part in a welcoming ceremony with Chinese President Xi Jinping in Beijing on Nov. 9, 2017. (Thomas Peter-Pool/Getty Images)
Supporters of Turkey's President Recep Tayyip Erdogan listen to him give remarks as they gathered in front of the AK Party headquarters on June 25, 2018 in Ankara, Turkey. Mustafa Kirazli/Getty Images
A television broadcast of a meeting between North Korean leader Kim Jong Un and Chinese President Xi Jinping in Seoul, South Korea on March 28. (Chung Sung-Jun/Getty Images)
South Korean activists hold placards showing images of the Trump-Kim summit and a South Korea-U.S. joint military drill during a rally to demand a halt to the Ulchi Freedom Guardian military exercise, near the U.S. Embassy in Seoul on June 15. (Jung Yeon-Je/AFP/Getty Images)
U.S. President Donald Trump speaks upon the return of American detainees Kim Dong Chul, Kim Hak Song, and Tony Kim after they were released by North Korea, at Joint Base Andrews in Maryland on May 10. (Saul Loeb/AFP)