President Joe Biden and his South Korean counterpart Yoon Suk-yeol have warned North Korea it would face a nuclear response and the “end” of the leadership there if Pyongyang uses its own arsenal. Speaking at the White House after Oval Office talks during only the second state visit in the Biden presidency on Wednesday, the two leaders said the US security shield for South Korea was being strengthened in the face of the nuclear-armed North’s aggressive missile tests.
