North Korea says it tested two new missiles on Thursday to send a "solemn warning" against "South Korean warmongers".
The short-range missiles were shot into the Sea of Japan from North Korea's east coast.
Speaking to state media after the launch, Kim Jong-un said the territory had to develop weapons in order to "eliminate potential and direct threats".
North Korea has also spoke about against a decision by South Korea and the USA to hold joint military drills next month.