Kim Jong Un warned that North Korea ’s rivals could not ignore its new hypersonic ballistic missile, which was tested while US secretary of state Antony Blinken was visiting South Korea on Monday.

North Korea in recent years has flight tested various intermediate-range missiles, which if perfected, could reach the U.S. Pacific military hub of Guam. In recent months, North has been testing combining these missiles with purported hypersonic warheads to improve their survivability.