The Ukrainian capital Kiev has again become the target of nighttime Russian attacks, the RBC-Ukraine agency reported.
This night, explosions echoed in the city, and an air alert was in effect in the city for more than five hours.
A total of 15 regions of Ukraine are also in the "red zone".
According to Ukrainian officials, the Russian attack on Sunday night, which killed at least 12 people and injured dozens, was the largest since the start of the full-scale Russian invasion.
After the attack, Ukrainian President Volodymyr Zelensky announced on the social network "Facebook" new sanctions against Russian citizens imposed by the National Security and Defense Council of Ukraine, Ukrinform reported.