SEOUL, SOUTH KOREA - MAY 18: U.S Secretary of State John Kerry speaks with South Korean foreign minister Yun Byung-Se (not pictured) during a joint press conference after their meeting at the Ministry of Foreign Affairs on May 18, 2015 in Seoul, South Korea. The U.S. Secretary of State John Kerry is visiting South Korea for two days to discuss issues including President Park's upcoming visit to the United States. (Photo by Jeon Heon-Kyun - Pool/Getty Images)
