North Korean leader Kim Jong Un has witnessed an extreme martial arts demonstration by soldiers at a military event marking the 76th anniversary of the founding of his ruling party. In the video broadcast by North Korea’s state television station KRT, the soldiers performed multiple shows of force: they broke objects, freed themselves from chains, lay down on glass and threw knives. Kim smiled and clapped while watching the show at the Defense Development Expo ‘Self-Defense-2021’. During the exhibition, Kim said that his country’s weapons development is necessary in the face of hostile US policies and military strengthening in South Korea.