Ukrainian drones hit multiple regions inside Russia
Russian officials confirm attacks on airfield and other targets
Kyiv claims responsibility for the attack without commenting on the nature of the incident
The number of drone strikes on Russia has increased in recent weeks
Russia vows to take action against the Ukrainian strikes
A firefighter works at the site of a missile strike in Kyiv
(EPA)
The increase in strikes inside Russia raises concern
Ukraine successfully defends against Russian missiles and drones
Moscow refuses international investigation into plane crash
Embraer jet crash kills Wagner founder and others
Western leaders suggest Kremlin involvement in the killing
Reuters and Associated Press contributed to this report