Russian Offensive Campaign Analysis: December 13, 2025

The ongoing military conflict in Ukraine has seen significant developments around Kupyansk. Ukrainian forces continue to advance, especially following their counteroffensive operations initiated in September 2025. These efforts come in response to rapid Russian advances into the region during the summer. In October 2025, Ukrainian troops successfully regained control over several towns, including Tyshchenkivka and Radkivka, leading to strategic gains.

Ukrainian Advances and Operations

Recent reports indicate that Ukrainian forces have made further territorial gains within the town of Kupyansk. Specifically, the Ukrainian military observer, Yuriy Butusov, confirmed the full seizure of Yuvileynyi Microraion in southwestern Kupyansk. This development is expected to hinder Russian forces in maintaining their positions in southern Kupyansk.

• Ukrainian clearing operations have reduced Russian infiltration groups in northern and western Kupyansk.
• Heavy fighting persists around areas such as Myrove and Radkivka, as acknowledged by Russian military bloggers.
• Ukrainian troops continue to push back against Russian attempts to penetrate Kupyansk.

Russian Military Response

Despite Ukrainian successes, Russian forces are attempting to regroup. They launched a significant missile and drone offensive against Ukrainian infrastructure on the night of December 12-13, 2025. This included targeting energy systems across multiple regions.

• A total of 495 missiles and drones were launched, with heavy emphasis on Odesa, Dnipropetrovsk, and Mykolaiv.
• Ukrainian air defenses reportedly intercepted 417 drones and 13 cruisers, demonstrating effective countermeasures.

International Responses and Future Discussions

Ukrainian President Volodymyr Zelensky is preparing for important discussions in Berlin with U.S. and European officials regarding a peace settlement. Key leaders expected to engage in talks include U.S. Special Envoy Steve Witkoff, UK Prime Minister Keir Starmer, and French President Emmanuel Macron. The U.S. has indicated potential support for a Ukrainian territorial referendum.

As developments continue to unfold, the narrative surrounding the conflict reflects the complexities of military engagements, regional security, and international diplomacy. The situation remains fluid, with continued assessments being made about both sides’ capabilities and strategies moving forward.