The situation 1364 – December 13, 2025

1. Ukrainian forces continue to advance within and near Kupyansk, and more details have emerged about the counteroffensive effort.
2. Ukrainian forces began counteroffensive operations in September 2025 after relatively rapid Russian advances in the Kupyansk direction and infiltrations into Kupyansk itself.
3. Russian forces launched 495 total missiles and drones against Ukraine overnight on December 12 to 13, heavily targeting energy infrastructure across the country.
4. Ukrainian President Volodymyr Zelensky announced that he will hold discussions regarding a peace settlement with US and European delegations in Berlin in the coming days.
5. Ukrainian forces recently advanced in the Kupyansk and Lyman directions. Russian forces recently advanced in the Lyman direction.

The full update of the Russian offensive 1364 is available on UNDERSTANDING WAR