KYIV, Ukraine, May 26, 2025 (BSS/AFP) - Russia fired 355 drones at Ukraine overnight in the biggest such attack since Moscow's 2022 invasion, Kyiv said on Monday, a day after Russian strikes killed 13 people.

US President Donald Trump earlier said that Russian leader Vladimir Putin had gone "absolutely crazy" in a rare rebuke of the Kremlin chief as Moscow bombed Ukraine during a major prisoner exchange.

Ukraine's air force said Russia had launched "355 Shahed-type drones", including decoys, as well as nine cruise missiles, with its spokesman Yuriy Ignat confirming to AFP that it was the largest drone attack since Moscow launched its full-scale invasion in February 2022.

The drone strikes on Monday came after what Kyiv described as a weekend of "terror".

Kyiv has so far not reported deaths from the drone attack, but said that Russian shelling in the last 24 hours had killed one civilian man in the north-eastern Sumy region, which has been under relentless Russian attack for several months.

Air alerts in Kyiv lasted for six hours, the capital's authorities said.

In the western Khmelnytsky region, local authorities said that 18 residential buildings were damaged by Russian drones.

The head of the southern Odesa region said a 14-year-old boy was wounded there.