South Korea must develop new weapons in response to the “grave threat” of the nuclear-capable assets North Korea displayed at its recent military parade, president-elect Yoon Suk-yeol’s transition committee said in a statement on Tuesday.

North Korean leader Kim Jong Un stressed in a speech at the parade that the country’s nuclear forces cannot be bound by what he called the “primary mission” of preventing war if Pyongyang’s “fundamental interests” are at risk. Experts suggested this may be evidence that Kim is beginning to envision greater uses for his nuclear bombs beyond defense and deterrence.