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
Seems like somebody with his credentials would be more circumspect in his statements. Not to say that American officials are reliable models of decorum...