Ukraine's Operation Vivaldi pushes Russians back near Lyman; both sides mass for southern battles

Ukrainian forces under the 3rd Army Corps have driven Russian units back across the Chornyi Zherebets River near Lyman, completing the first phase of Operation Vivaldi. The claim comes from commander Andriy Biletsky and is partially corroborated by published footage, but independent confirmation is lacking. Both armies are now massing troops for the next phase of fighting farther south, indicating a shift in the front line's focus.