The North Korean leader’s sister Kim Yo Jong rejected Seoul’s “audacious plan” to provide economic assistance in exchange for denuclearization, telling South Korean President Yoon Suk-yeol to “keep his mouth shut” in a statement released in state media Friday.

Kim also accused Yoon of conducting “invasion war exercises” as Seoul and Washington prepare for large-scale joint military drills this month, while ridiculing the South Korean and U.S. militaries for misidentifying the location of Wednesday’s missile test and failing to release details about its flight path.