Ukrainian intelligence is behind large-scale drone attack on Russia — ISW

This is stated in the report of the Institute for the Study of War (ISW).

The Russian Ministry of Defense said that on the night of November 25-26 and in the morning of November 26, Russian air defense systems shot down 24 Ukrainian drones over the Moscow, Tula, Kaluga, Bryansk, and Smolensk regions. 

Tula Region Governor Alexei Dyumin said that one of the drones crashed into an apartment building in Tula, which was shot down by Russian air defense systems. 

The nighttime strike by Ukrainian drones on Russia was a HUR special operation, Suspilne reported, citing its own unnamed sources. 

Also, Russian sources, including the leader of the "DPR" Denis Pushilin, said that Ukrainian troops had launched a powerful artillery and Grad strike at night on power substations in the occupied Donetsk region, which led to a power outage in many settlements, including Donetsk, Mariupol and Mangush.

• On November 26, the Russian Defense Ministry claimed the country came under intense drone attack and that it had downed 24 drones over 5 regions, with one hitting a residential high-rise building in the city of Tula. Russian occupation authorities also reported damage to the power system in Ukraine's Donetsk region, which they call the "Donetsk People's Republic.”