Russia claims encirclement of Ukrainian forces in Dobropillya; drone strike hits Kuibyshev refinery

Russian MoD reports encircling Ukrainian troops in Dobropillya, while a Ukrainian drone attack targeted the Kuibyshev refinery in Samara. The encirclement claim is unverified and likely part of ongoing offensive operations; the refinery strike signals continued Ukrainian long-range strike campaign against Russian energy infrastructure. Significance lies in potential battlefield shift and energy supply disruption.