Ukrainian forces strike Russian targets, Mariupol port unusable, and intense fighting reported

Ukrainian forces reportedly struck a military facility in Russia's Cheboksary and the Kuibyshev oil refinery in the Samara region. Ukraine's Azov National Guard, in a joint operation, declared Mariupol port unusable for Russian forces following drone attacks. On the front lines, Ukrainian military officials recorded 234 combat engagements, repelling 40 Russian assaults in the Pokrovsk sector. Russia launched 207 attack drones from five directions, with Ukraine's Air Force claiming 181 interceptions, though 21 drones reportedly hit 14 locations nationwide. Russian forces sustained approximately 1,190 personnel losses and three tanks. Sources: Українська правда, Громадське, Радіо Свобода