His words are reported by Reuters.
The North Korean leader also pointed out that his previous experience in negotiations with Washington only highlighted the "aggressive and hostile" policies towards Pyongyang.
“We have already gone as far as we could in negotiations with the U.S., but as a result, we have confirmed not the superpower's readiness for coexistence, but its hardline stance and aggressive, hostile policies towards us, which will never change,” stated Kim Jong Un.
He also called for the development and modernization of domestic weaponry and promised to continue enhancing the defense capabilities to strengthen the country's strategic position, as reported by North Korea.