North Korea launched a missile about an hour ago, adding pressure to an already volitile situation on the peninsula. Yonhap is reporting that the projectile–it is currently unknown what type of missile was launched–flew 700 kilometers (Yonhap). The missile was launched near the city of Kusong.
South Korea’s newly minted president Moon Jae-in convened an emergency meeting of the security council following the launch. The military also released a statement saying it “is closely monitoring for proactive movements by North Korea and maintaining all readiness postures” (CNN). This response is typical for South Korea following a launch.
In terms of motivation, the launch is most likely a test of the Trump-Moon dynamic. President Trump has favored a more militaristic and tough approach while Moon favors engagement to denuclearize Pyongyang. This also ensures North Korea is issue number one in the alliance, possibly straining the relationship because of the different approaches.
North Korea also has been politically active. On May 13, North Korea called for the UN to reconsider sanctions against the country (Yonhap).