As of 10:00 PM eastern US time on Christmas Day (December 25) reports are flooding intel circuits saying Ukraine launched a Kamikaze Drone attack upon Russia's ENGELS Air Base. This base is home of 121st & 184th Heavy Bomber Aviation Regiments.
One TU-95MS Heavy Bomber is reported completely destroyed.
Ukraine used a long-range Kamikaze drone (modified Tu-141 reconnaissance drone) to carry out the attack.
The base is shown on the scalable map below so readers can see how far into Russia the attack took place: