Kseniia Petrova, a Russian-born Harvard researcher, speaks to reporters after being released from federal custody in Boston, Massachusetts on June 12, 2025. (Credit: Polina Pugacheva via Associated Press) Kseniia Petrova, a Russian-born Harvard researcher, speaks to reporters after being released from federal custody in Boston, Massachusetts on June 12, 2025. (Credit: Polina Pugacheva via Associated Press)
