After sightings of armour screens on tanks and submarines, Russia appeared to be extending its defensive measures to safeguard its oil refineries. Russia was seen installing “cope cages” to safeguard its oil refineries against possible Ukrainian drone attacks. Specific details regarding the location of the fortified oil depot remained undisclosed, but the logo painted on the site suggested it was owned by the Slavyansk ECO Group. An image circulating on the internet on April 27 depicted Russian oil depots equipped with these anti-drone cages. Watch the video to find out more.