South Korea's Joint Chiefs of Staff announced that North Korea launched a ballistic missile into the sea from the eastern coastal city of Wonsan on Saturday morning. This launch occurred a day after Kim Yo Jong, the sister of North Korean leader Kim Jong Un, ridiculed South Korea's demand for an apology regarding a landmine explosion and stated North Korea's intention to permanently sever ties with South Korea. Previously, North Korea had conducted a series of military displays, including tests of a hypersonic missile system and the commissioning of new warships.