Russian airfield hit, day after strikes on bases

Kyiv: A fire that broke out at an airport in Russia's southern Kursk region that borders Ukraine was the result of a drone attack, the regional governor said Tuesday, a day after Moscow blamed Kyiv for drone strikes on two air bases deep inside Russia and launched a new wave of missile strikes on Ukrainian territory.

Kursk Governor Roman Starovoy said in a Telegram post that the drone attack ignited an oil reservoir in the area of Kursk airport and the blaze was being contained by crews at the scene.

Ukrainian officials have not formally confirmed carrying out the drone attacks, maintaining their apparent policy of deliberate ambiguity as they have done in the past when it comes to high-profile attacks on Russian targets. Presidential adviser Mikhail Podolyak taunted Moscow in comments on Twitter. "If something is launched into other countries' airspace, sooner or later unknown flying objects will return to the point of departure," Podolyak wrote. "The earth is round."

The unprecedented attacks in Russia more than 500 km (300 miles) from the border with Ukraine threatened a major escalation of the nine-month war.

One of the airfields houses bombers capable of carrying nuclear weapons.

The attacks also exposed the vulnerability of some of Russia's most strategic military sites, raising questions about the effectiveness of their air defences. Russia's Defence Ministry said three Russian servicemen were killed and four others wounded by debris, and that two aircraft were slightly damaged.

The ministry didn't say where the drones had originated. But Russian military bloggers said they likely were launched by Ukrainian scouts, and argued that the strikes had inflicted serious reputational damage on Moscow.

The attacks on the Engels base in the Saratov region on the Volga River and the Dyagilevo base in the Ryazan region in western Russia were part of Ukraine's efforts to curtail Russia's long-range bomber force, the ministry said.