Residents of the Ukrainian capital scrambled underground as the Kremlin launched a massive overnight attack. Moscow said it was retaliation for Ukrainian strikes that have fueled a growing crisis for Vladimir Putin.

Fires broke out in Kyiv’s Shevchenkivskyi district as officials warned of a multi-wave Russian attack on the capital.

Russia launched one of its largest ever missile and drone attacks on Kyiv late on Wednesday with blasts continuing through Thursday morning killing at least 21 people. Buildings…