Boris B. Nadezhdin, 63, appeared in a video standing in front of the Eiffel Tower. He said he was “alive and free, but, unfortunately, not yet in Russia.”
Boris Nadezhdin, a Russian opposition politician, at his home in Moscow in June. His departure means antiwar Russians have one fewer advocate in the country’s ever-shrinking public sphere.
Among the victims of the explosion, which also injured 21 people, were a security guard and a woman who the authorities say had arrived with the suspicious package.
Ukrainian strikes set fire to warehouses and other sites in Russia, and Russian bombing rocked Ukraine’s capital, as the two countries escalated an air campaign.