A concrete marker with the North Korean and Chinese national flags has the words "China North Korea Border," at a crossing in the Chinese border town of Tumen in eastern China's Jilin province.
Ng Han Guan/AP
Former NBA star Dennis Rodman presents the book The Art of the Deal to North Korea's Sports Minister Kim Il Guk last June in Pyongyang, North Korea. Until this week, Rodman was believed to be the only person who had met both Kim and the U.S. president.
Kim Kwang Hyon/AP
North Korean leader Kim Jong Un, right, and Choe Ryong Hae, vice chairman of the central committee of the Workers' Party, arrive for the official opening of the Ryomyong residential area, in April 2017 in in Pyongyang, North Korea.
South Korean Unification Minister Cho Myung-gyun (left) shakes hands with North Korean chief delegate Ri Son Gwon after their meeting Tuesday at the village of Panmunjom in the Demilitarized Zone dividing the two countries.
Kim Jong Nam had been critical of North Korea's dynastic rule. Kim Jong Un, who inherited the leadership in 2011, was believed to have issued a standing order for his brother's execution.
Asahi Shimbun via Getty Images
A view of Wednesday's successful test launch of the newly developed intercontinental ballistic rocket Hwasong-15 is seen in this undated photo released by North Korea's Korean Central News Agency in Pyongyang.
KCNA via Reuters
North Korean Foreign Minister Ri Yong Ho leaves his hotel in New York on Monday. Ri says President Trump's tweets amount to a declaration of war against North Korea — and that the country can now defend itself under international law.
Jewel Samad/AFP/Getty Images
Passers-by look at the North Korean missile's path over Japan, displayed on a huge screen in Tokyo on Wednesday. Japanese Prime Minister Shinzo Abe said he and President Trump have agreed to increase pressure on Kim Jong Un's regime after it launched a ballistic missile over the Japanese island of Hokkaido.
Toshifumi Kitamura/AFP/Getty Images
Afternoon traffic passes in front of a wall painted with the flags of the U.S. and Guam in the Tumon district on the island of Guam on Friday. The island has become a talking point in the rhetoric coming from President Trump and North Korea.
Virgilio Valencia/AFP/Getty Images