U.S. Vice President Mike Pence on Monday warned North Korea not to “test the resolve” of President Donald Trump and the strength of U.S. forces in South Korea, speaking during a visit to Seoul.

At a televised news conference with South Korean Acting President Hwang Kyo-ahn, Pence described the North’s nuclear and missile threats as “the region’s most dangerous and urgent threat to peace and security.”

U.S. Vice President reiterated that the U.S and its allies have worked together to denuclearize Korean Peninsula since 1992 through “peaceful means”, but suggested the U.S. might change its approach to the North’s nuclear