U.S. Vice President Mike Pence (L), shakes hands with South Korean Prime Minister Hwang Kyo-ahn, who is serving as the acting South Korean president, before their meeting in Seoul, South Korea, on April 17, 2017. Visiting U.S. Vice President Mike Pence said Monday that "an era of strategic patience is over" on the Democratic People's Republic of Korea (DPRK). (Xinhua/POOL)
