Kasparov, who has lived in the United States since fleeing Russia in 2013, wrote in his publication The Next Move that he was one of two dissidents told to take safety precautions. He said he had not been explicitly told that he and fellow Free Russia Forum co-founder Ivan Tyutrin were considered targets, but both had been warned about their safety.
Spanish newspaper El Mundo reported that Kasparov and another Russian opposition figure, Ilya Ponomarev, were warned over the summer by US authorities. Citing sources close to Kasparov, the paper said he had been placed under enhanced protection for the first time since moving to the US.
"I will not stop and I will not hide, even if I thought it was possible to do so," Kasparov wrote separately. "My family and I will not truly be safe as long as [Russian President Vladimir] Putin is in power in Russia - a circumstance shared by millions."
Kasparov retired from competitive chess in 2005 to pursue politics, founding movements that opposed Putin. Russia designated him a foreign agent in 2022 and added him to a list of terrorists and extremists in 2024, classifications he rejects.
The US indictment unsealed earlier this month accuses five people of belonging to a network linked to the Kremlin and allegedly plotting attacks and murders in multiple countries, with a focus on Russian dissidents and defectors.