Chang Won-sam (R) and Timothy Betts, top negotiators from South Korea and the United States, sign a deal to share defense costs for U.S. forces stationed in South Korea, in Seoul, South Korea, Feb. 10, 2019. Under the revised Special Measures Agreement stipulating cost sharing for the U.S. forces in South Korea, South Korea will pay 1.04 trillion won (925 million U.S. dollars) this year. (Xinhua/South Korean Foreign Ministry)