Secretary of State Pompeo arrives in South Korea

U.S. Secretary of State Mike Pompeo speaks with Marc Knapper, U.S. Embassy in Seoul Charge d’Affaires ad interim, at Osan Air Base, Republic of Korea, June 13, 2018.

U.S. Secretary of State Mike Pompeo speaks with Marc Knapper, U.S. Embassy in Seoul Charge d’Affaires ad interim, at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, Pompeo will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Senior Airman Kelsey Tucker)

U.S. Secretary of State Mike Pompeo speaks with Gen. Vincent Brooks, United States Forces Korea commander, at Osan Air Base, Republic of Korea, June 13, 2018.

U.S. Secretary of State Mike Pompeo speaks with Gen. Vincent Brooks, United States Forces Korea commander, at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, Pompeo will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Senior Airman Kelsey Tucker)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

U.S. Secretary of State Mike Pompeo, center, arrives at Osan Air Base, Republic of Korea, June 13, 2018. During his visit, he will meet with senior South Korean and Japanese officials to discuss the U.S.-South Korea alliance, the U.S.-Japan alliance, shared priorities and the next steps in the ongoing, diplomatically-led efforts with the Democratic People's Republic of Korea. (U.S. Air Force photo by Airman 1st Class Ilyana A. Escalona)

OSAN AIR BASE, Republic of Korea --