Urban combat in Kostiantynivka as Ukrainian forces strike Russian targets

Ukrainian forces are engaged in urban combat in Kostiantynivka against enemy personnel who have infiltrated the city, with assault units involved in clearing operations. A battalion commander stated the city is "semi-encircled" due to Russian advances near Chasiv Yar and Berestky. On June 10, Ukrainian forces reportedly struck a military factory in Cheboksary and the Kuibyshev oil refinery in Russia. The Azov National Guard, collaborating with other defense units, announced that drone operations rendered Mariupol port unusable for Russian forces, stating it was "completely de-energized." Russian forces also attacked two civilian cargo vessels under Panamanian and Barbadian flags in the Black Sea, which were reportedly heading along a maritime corridor, along with the southern Odesa region. Sources: Українська правда, Громадське, Радіо Свобода