Spying is a strange world. Countries accept that there is espionage within some limits, plenty of hacking too, planes flying near borders, historically even over countries.

Drones ... wonder how tolerant they will be considering their magical ability to go just about anywhere and few if any ways to stop them.

> [the tanker] was monitored sailing west around Denmark last week, and was cited by naval experts as one of a handful of Russia-linked vessels that may have been involved in the drone incidents.

> Copenhagen airport was closed for four hours in the evening of 22 September and Aalborg airport two days later, after drones were sighted in Danish airspace. None, however, were shot down and while Denmark has pointed the finger at Russia its investigators have not been able to say who is responsible.

Old Geezer Take: "Back in my time, sonny, we had this thing called radar. It ran on electricity, and could somehow spot stuff flying through the air - even at night - and tell us where it was, and which way it was headed..."