 Russia changes tactics of mass strikes, energy infrastructure, not priority. Russia changes tactics of mass shelling of Ukraine with long-range weaponry. Apparently, the adversary has shifted its priority targets for attacks, reports the Ministry of Defence of Britain on X. British intelligence notes that since December 29, 2023, Russia has intensified its strikes against Ukraine, utilizing a significant portion of air-based missile reserves that were accumulated in recent months. The recent strikes likely primarily directed at Ukraine's defence industry. It contrasts with its major attacks last winter which prioritised striking Ukraine's energy infrastructure the summery states. Intelligence underscores that the Russian shelling of energy facilities earlier in December indicated Russia's intention to reinstate energy-related terror. However, the recent attacks indicate a change in Moscow's tactics. These new operations suggest at least a temporary shift of approach in Russia's use of long-range strikes. Russian planners almost certainly recognise the growing importance of relative defence industrial capacity. As they prepare for a long war, the intelligence adds, on December 29, Russians launched 158 missiles of various types and assault drones at Ukraine. On January 3, Russians repeated a massive shelling. Initially, Russians released 35 kamikaze drones, all of which were intercepted. Following that, 99 missiles of various types including aerobalistic kinsels were launched across Ukraine.