Following a deadly attack by Russian forces on a children's hospital in Kyiv, Ukraine retaliated with strikes on Russian oil facilities, resulting in casualties and damage across various regions. President Zelensky declared a national day of mourning and vowed to hold Moscow accountable for acts of terror. Additionally, Ukrainian air defenses intercepted Russian missiles and drones in multiple regions, with reports of injuries and damage. Meanwhile, Russia claimed capturing villages in eastern Ukraine amidst ongoing territorial advances, leading to fierce battles and heavy casualties. The conflict has seen significant territorial changes but at a high cost, with estimates suggesting Russia losing thousands of troops monthly.