North Korean leader Kim Jong Un oversaw the launch of a new intercontinental ballistic missile (ICBM) called the “Hwasong-19” on Thursday, according to state media, hailing his nuclear weapons program as “absolutely irreversible.”

Kim said the solid-fuel Hwasong-19 is a “final edition” ICBM that will operate alongside the similar but smaller Hwasong-18 “as the primary core weapon for defending the DPRK, thoroughly deterring acts of aggression and reliably safeguarding national security,” the Rodong Sinmun reported on Friday.

“Provocations by the U.S. and South Korean puppet forces, along with reckless threats targeting our government, pose serious threats to our nation’s