Russia's national airline, Aeroflot, said it had cancelled dozens of flights after pro-Ukrainian hackers claimed an attack on the carrier's IT systems. A statement from hacking group Silent Crow said it carried out the attack with the help of a Belarusian group Cyberpartisans.

The hack may have been part of a campaign to disrupt the sense of normalcy Russians have mostly enjoyed since the start of the war.

MOSCOW (Reuters) -Russian airline Aeroflot was forced to cancel more than 50 round-trip flights on Monday, disrupting travel across the world's biggest country, as two pro-Ukraine hacking groups claimed to have inflicted a crippling cyberattack.