US to deploy nuclear submarines in South Korea after 40 years.

President Biden and South Korean President Yoon Suk Yeol unveiled a new plan to counter North Korea's nuclear threat, including docking U.S. nuclear-armed submarines in South Korea, bolstering training between the two countries, and more. Biden issued a blunt warning that a nuclear attack by North Korea against the U.S. or its allies would "result in the end of whatever regime" took such action. The declaration was unveiled as Biden hosted Yoon for a state visit at a moment of heightened anxiety over an increased pace of ballistic missile tests by North Korea.