The attacks were first reported on Monday by the Russian news agency Ria Novosti.
It is likely that the information about the attack is correct, even if you don't know much about the information from either the Russian or Ukrainian side, according to SVT's correspondent Bert Sundström, who is on site in Moscow.
The air bases that were attacked are located some distance inside the Russian border.
- If these drones were launched from Ukraine, they have flown tens of miles over Russian territory, which is remarkable, says Bert Sundström.
During the night of Tuesday, there have been several reports of Russian attacks against Ukrainian cities, including the Zaporizhzhya area.
Hear SVT's Russia correspondent in the clip above.