Russia pounded Kyiv with a large missile and drone attack early on Sunday, killing two people and wounding 56, authorities said, after President Vladimir Putin threatened retaliation for strikes in Russian-occupied eastern Ukraine.

Russia launched waves of deadly airborne attacks across eastern regions of Ukraine which responded with retaliatory drone strikes into southern Russia.

Kyiv experienced a significant missile and drone attack early Sunday, with explosions heard across the city. At least three people were injured and residential buildings sustained…