North Korea Notifies Japan of Upcoming Satellite Launch

North Korea has informed Japan of its plan to launch a "satellite" that could be a ballistic missile between May 31 and June 11. Japanese officials believe the launch will involve a ballistic missile, according to a tweet from the prime minister's office. North Korea has previously completed work on its first spy satellite, and analysts say it is part of the country's efforts to advance surveillance technology and improve its ability to strike targets in the event of a conflict.