A cyberattack on Russian state-owned flagship carrier Aeroflot caused a mass outage to the company’s computer systems on Monday, Russia’s prosecutor’s office said, forcing the airline to cancel more than 100 flights and delay others.

Russian national flag carrier Aeroflot was forced to cancel dozens of flights on Monday, disrupting travel across the world's biggest country, as two pro-Ukraine hacking groups claimed to have inflicted a crippling cyberattack.

MOSCOW (Reuters) -Russian airline Aeroflot cancelled dozens of flights on Monday after what it called a failure in its information systems, and a shadowy hacking group claimed responsibility for what it said was a crippling cyberattack.

U.S. President Donald Trump set a new deadline of 10 or 12 days for Russia to make progress toward ending the war in Ukraine or face consequences, underscoring frustration with Russian President Vladimir Putin for the 3-1/2-year-old conflict.