Biden, Yoon warn N.Korea on nukes, unveil deterrence plan

Sustainable peace on the Korean Peninsula does not happen automatically, says Yoon

President Joe Biden and South Korea's Yoon Suk Yeol unveiled a new plan Wednesday to counter North Korea's nuclear threat, with the U.S. leader issuing a blunt warning that such an attack would "result in the end of whatever regime" took such action.

The new nuclear deterrence effort calls for periodically docking U.S. nuclear-armed submarines in South Korea for the first time in decades, bolstering training between the two countries, and more. 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.

"A nuclear attack by North Korea against the United States or its allies and partners is unacceptable, and will result in the end of whatever regime were to take such an action," Biden said during afternoon Rose Garden news conference with Yoon.

Yoon said that the new commitment by the "righteous alliance" includes plans for bilateral presidential consultations in the event of a North Korean nuclear attack, the establishment of a nuclear consultative group and improved sharing of information on nuclear and strategic weapons operation plans.