In the 48-hour period Sky News spent with anti-aircraft units in the Sumy region, Russia deployed a record number of drones into Ukraine.

Russia carried out several missile strikes and launched 110 drones against Ukraine on the night of 11-12 November: Ukraine's air defence downed 46 drones, 60 had disappeared from radar and 2 entered the Belarusian airspace.

Russia and Ukraine have exchanged record numbers of drone strikes, with Moscow launching a total of 145 drones on Saturday night – the most ever in a single night-time attack of the war.