The U.S. is not discussing “joint nuclear exercises” with South Korea, President Joe Biden said Monday, seemingly contradicting claims from ROK President Yoon Suk-yeol that the allies may re-envision extended deterrence on the Korean Peninsula.

Yoon had earlier said in an interview with the Seoul-based Chosun Ilbo newspaper that the allies are discussing ways to enhance South Korea’s involvement in exercises related to U.S. nuclear weapons. 

“The nuclear weapons belong to the U.S., but information sharing, planning and exercises must be conducted jointly by the U.S. and South Korea,” Yoon said in the interview published Monday local time. “The U.S.