Drones attacked ships in the Sea of Azov, killing five people. The strike was confirmed by the Ukrainian Air Force. Earlier, Vladimir Zelensky published an open letter to Vladimir Putin. In it, the Ukrainian president said that Kyiv could sharply increase the cost of the war for Moscow, and called on the Russian president to hold a personal meeting to end the war. Today Putin spoke at the economic forum in St. Petersburg, where he also commented on Zelensky’s letter.