North Korean leader Kim Jong Un threatened to use nuclear weapons to destroy South Korea if attacked, state media reported Friday, after South Korea’s president warned that if the North used nuclear weapons it would “face the end of its regime.

As Russia made progress in revising its nuclear policy amid its war with Ukraine, North Korea vowed to never give up its own nuclear weapons despite demands from the West.

North Korean weapons have reportedly been used on the front lines against Ukraine. This establishes a scary new normal, one that allows North Korea to get wartime performance feedback on its weapons.