Ukrainian President Volodymyr Zelensky said Monday that 87 people were killed in a Russian attack earlier this month on a military base in a region of northern Ukraine that was earlier reclaimed by Kyiv's forces, according to AFP.

"Today, under the rubble in Desna, there are 87 victims. Eighty-seven corpses, victims who were killed," Zelensky said during an address to the Davos summit, referring to Russian strikes on May 17 on a village that is home to a Ukrainian military base in the Chernigiv region.