Ukrainian drones struck targets in at least six areas deep inside Russia today, including an airfield where they destroyed military transport planes, in one of the broadest attacks in Kiev’s campaign to turn the tables on Moscow.

Russian officials described attacks on targets in Pskov, Bryansk, Kaluga, Orlov, Ryazan and Moscow regions. The Russian Foreign Ministry said the attacks “will not go unpunished” and that the drones could not have reached so far into Russian territory without Western help.

In northern Russia, more than 600 kilometers from Ukraine, a massive fire broke out at a military airport in the city of Pskov, where elite paratrooper units are based.

The Tass news agency reported that at least four giant Il-76 transport aircraft were damaged, two of which “went up in flames”.

The attacks coincided with Russia’s most serious air strikes on the Ukrainian capital in months. Authorities in Kiev said at least two people were killed as debris from intercepted missiles fell in four places.

Reuters captured footage showing a fireball falling from the night sky near a supermarket, then setting off a huge explosion that lit up nearby apartment buildings. Moscow said it hit command and intelligence targets.

In Russia, the governor of Pskov posted video on Telegram showing a huge fire with sirens and an explosion at the airbase. Other videos posted online showed anti-aircraft systems in action around the city, which is just 32 kilometers east of Russia’s border with NATO member Estonia.

Moscow said it had repelled all attacks against Russia. Russia routinely describes all Ukrainian drone attacks as unsuccessful, regardless of the damage caused on the ground.

Kremlin spokesman Dmitry Peskov said Russia was investigating where the drones were launched to prevent further strikes. President Vladimir Putin was immediately informed, as would be the case with any such “massive attack,” Peskov said.

Kiev confirmed that the Russian aircraft were destroyed in Pskov, without commenting on the nature of the incident. It generally does not comment on strikes on territory inside Russia, although it says it has the right to strike military targets.

“Yes, four IL-76 transport aircraft were destroyed in Pskov at an airfield, they cannot be repaired. Also, many more of them (the aircraft) have been damaged, but the information is being verified,” Andrii Yusov, a spokesman for Ukraine’s GUR military service, told Reuters.

Ukraine’s Western allies have generally barred Ukraine from using weapons they supply it to attack Russia, but say Kiev has the right to carry out such attacks with its own weapons.

Among other attacks in Russia, Moscow says Ukrainian drones attempted to attack the TV tower in the Bryansk region, but no casualties were reported.

Moscow also said its jets destroyed four Ukrainian high-speed boats carrying up to 50 paratroopers in the Black Sea and that its forces repelled attacks by enemy drones. Reuters could not independently confirm this information.

Attacks against Russia in recent weeks, including repeated drone strikes in central Moscow, have brought the war home for the first time to many Russians, even as Ukrainians have lived for the past year and a half under constant threat from Russian airstrikes.

“As long as Putin remains president, the war will continue. It is leading Russia deeper and deeper into the abyss of chaos,” Mykhailo Podoliak, a senior adviser to Ukrainian President Volodymyr Zelensky, wrote to X.

Moscow has been relentlessly pounding Ukrainian cities with long-range missiles and drone strikes throughout the war. Thousands of Ukrainian civilians have been killed.

Ukraine said its air defenses shot down 28 Russian missiles and 15 of the 16 drones launched overnight.

“Kiev has experienced such a strong attack since the spring. The enemy launched a massive, combined attack using drones and missiles,” Serhii Popko, head of the city’s military administration, told Telegram.

Ukrainian forces have been continuing the summer offensive for almost three months. They have yet to break through Russia’s heavily mined and fortified defense line, although they said last week they had finally penetrated the first main line of defense.