Several French towns have banned burkinis from their beaches, sparking outcry from religious groups who say the moves are discriminatory and illegal.
Wednesday's quake was felt more than 100 miles away in Rome, and was followed by several aftershocks amid dramatic rescues and cries for help.
Launching long-range ballistic missiles from submarines is stealthier than land launching.
The hybrid of blimp, helicopter and airplane is designed to stay aloft for days at a time.
Images broadcast on state TV showed an ecstatic Kim Jong Un celebrating the purported launch.