U.S. Vice President Mike Pence and Second Lady Karen Pence arrive at Osan air base in Pyeongtaek, South Korea, on Thursday, Feb. 8, 2018. "The United States will continue to stand shoulder-to-shoulder" with South Korea to pressure North Korea to end its nuclear program, Pence said at meeting in Seoul with South Korea President Moon Jae-in. Photographer: Ryu Seung-il/Pool via Bloomberg
US vice president Mike Pence and Second Lady Karen Pence arrive at Osan airbase in Pyeongtaek, South Korea, on February 8, 2018. Ryu Seung-il / Bloomberg

Pence raises prospect of US-North Korea talks, Seoul seeks to lower tensions