On October 19, North Korea flight tested a new submarine-launched ballistic missile (SLBM) near Sinpo on the country’s east coast. According to South Korea’s military, the SLBM flew 590 km and reached a maximum altitude of 60 km. North Korean state media hailed the launch as a success, noting that the “new type SLBM” incorporated “advanced control guidance technologies including flank mobility and gliding skip mobility.” The launch marks North Korea’s eighth missile test this year.