Actually, a task force of the Royal Liechtenstein Navy was doing ASW (anti-submarine warfare) training in the area. Turns out that the calibration on the RLN's new model of depth charges is a ways off...
No mere MEP, Sikorksi is the ex Polish Defence Minster and Anne Applebaum's - staff writer at The Atlantic and prominent anti-Putin critic - husband to boot. Pretty wild thing to tweet