A massive Russian drone-and-missile attack targeted the Ukrainian capital, Kyiv, and other regions in the country for a second consecutive night, killing at least 12 people and injuring dozens, officials said early Sunday.

Russia and Ukraine have swapped hundreds more prisoners of war, the third and last part of a major swap, hours after a massive attack by Moscow, killing at least 12.

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.”