The day was dominated by Putin's announcement of changes to Russia's nuclear doctrine. Early reports indicated Putin would address the Security Council on nuclear deterrence. By afternoon, he proposed expanding the conditions for nuclear weapon use, including responses to conventional attacks threatening Russia's sovereignty. Putin specifically mentioned potential nuclear retaliation against missile and drone attacks crossing Russian borders. This development overshadowed other news, including the arrest of Sochi's former mayor and the death of actor Roman Madyanov. The nuclear doctrine announcement sparked international reactions, with Ukraine's presidential office calling it "nuclear blackmail." The day concluded with analysis and discussions on the implications of Russia's revised nuclear posture.