Russia Escalated Sabotage to Pressure U.S. and Allies on Ukraine, Study Says

Anger at Russia’s covert efforts, which included targeting undersea cables, warehouses and railways, has the potential to influence European reactions to the U.S.-led push for an end to the war.

Biden Aides Warned Putin as Russia’s Shadow War Threatened Air Disaster

The White House scrambled to get a message to President Vladimir V. Putin of Russia last year after U.S. intelligence agencies said a Russian military unit was preparing to send explosive packages on cargo planes.