North Korean leader Kim Jong Un guided a successful test of the new “Hwasong-16B” hypersonic intermediate-range ballistic missile (IRBM) on Tuesday, according to state media.

The Rodong Sinmun reported Wednesday that the inaugural test of the solid-fuel missile, equipped with a “newly-developed hypersonic gliding flight warhead,” demonstrated technology that can improve survivability of all the country’s nuclear missiles.

“Another mighty strategic attack weapon has been born, meaning all our tactical, operational and strategic-level missiles of various ranges can become solid-fuel, nuclear-armed and with maneuverable warheads,” Kim reportedly said at the test.

The launch proved his “three principles of building