North Korean leader Kim Jong Un supervised the test launch of a “new type of surface-to-sea missile,” according to official media. Kim expressed "great satisfaction with the results of the missile test launch," the agency reported.

Kim said South Korea had allowed "various types of warships to enter the waters of the Democratic People's Republic of Korea to seriously infringe on its sovereignty" The maritime border between the two countries, which is called the “Northern Border Line,’ has not yet been officially demarcated.