Kosta Gak, Anna Chernova, Helen Regan, Sana Noor Haq, CNN Thu, June 4, 2026 at 4:32 a.m. UTC 5 min read Add Yahoo as a preferred source to see more of our stories on Google. Ukrainian drones rained down on St. Petersburg overnight, striking key infrastructure and wounding several people, just hours before Russian President Vladimir Putin's signature economic forum drawing thousands of attendees opened in the city.