North Korea Tests Suspected IRBM into the East Sea
The testing of an IRBM is sending a message to the US and Japan that bases in both countries can be targeted with this missile:

North Korea fired a suspected intermediate-range ballistic missile (IRBM) into the East Sea on Sunday, South Korea’s military said, in Pyongyang’s first missile launch this year amid heightened tensions over its continued saber-rattling.
The Joint Chiefs of Staff (JCS) said it detected the launch from an area in or around Pyongyang at about 2:55 p.m. and the missile flew around 1,000 kilometers before splashing into the sea.
The JCS strongly condemned the launch, calling it a “clear provocative act,” adding that it shared data on the North Korean missile with U.S. and Japanese authorities, with an analysis on its specifications under way.
Yonhap
You can read more at the link.

