Kim Jong Un oversaw hypersonic missile tests as North Korea ramped up weapons displays ahead of a major political conference, state media reported.

North Korea on Sunday launched what it claimed to be hypersonic missiles into the Sea of Japan in a firing drill. North Korean leader Kim Jong Un, who stated that nuclear deterrence is necessary due to the “recent geopolitical crisis and complicated international events,

The Pentagon said China has the world's leading hypersonic missile arsenal for conventional and nuclear strikes.