Russia moves S-400 air defense systems from Kaliningrad to Ukraine: British intelligence explains why

This is stated in a report by the UK Ministry of Defense.

It noted that the relocation of Russian S-400s is evidenced by the movements of Russian air transport until November 2023.

According to British intelligence, Russia considers Kaliningrad to be one of its most strategically sensitive regions, in part because it is bordered on three sides by NATO member states. Therefore, the relocation of S-400 systems from Kaliningrad is an important step for Russia.

"The fact that the Russian MoD appears willing to accept additional risk here highlights the overstretch the war has caused for some of Russia’s key, modern capabilities," the British Ministry of Defense states.

• Earlier, British intelligence noted that following reports of the loss of several Russian S-400 missile systems, Russia may have to move air defense assets from remote areas to the front.