The attack involved nearly 370 missiles and drones, according to the Ukrainian Air Force. At least 12 people were killed.

The missile and drone attack casts more doubt on the U.S.-brokered peace process. President Volodymyr Zelensky condemned the “silence of America and others around the world.”

The Ukrainian capital Kyiv and other regions came under a massive Russian drone-and-missile attack Sunday that killed at least 12 people and injured dozens.