North Korean leader Kim Jong Un vowed to respond to U.S. nuclear ¡°threats¡± with his own nuclear weapons, state media said Saturday, after Kim attended the launch of a powerful ¡°new type¡± of long-range missile with family members a day earlier.

Kim lambasted recent joint U.S. military drills with South Korea and Japan, as well as announcements that the U.S. was seeking to strengthen its ¡°extended deterrence¡± commitment to Tokyo and Seoul, according to the North¡¯s official Korean Central News Agency.

Extended deterrence refers to the United States¡¯ readiness to provide South Korea and Japan with all necessary options, both nuclear and conventional, to deter aggression by the North.