Photo provided by the Korean Central News Agency (KCNA) on May 10, 2018 shows Kim Jong Un (R), top leader of the Democratic People's Republic of Korea (DPRK), shaking hands with visiting U.S. Secretary of State Mike Pompeo on May 9, 2018. Kim Jong Un expressed confidence that his upcoming summit meeting with U.S. President Donald Trump would be a historic one. (Xinhua/KCNA)