New Delhi, Dec. 20 -- Maxim Kilderov works among reminders of death - scorched metal, torn fabric, and the personal debris of lives cut short by war.

In a basement near Kyiv's Maidan Square, the Ukrainian street artist has assembled a grim collection of battlefield relics which together form an unofficial record of Russia's invasion.

Rocket launch tubes sit beside the diary of a Russian intelligence officer; captured Russian uniforms hang from darkened walls; thousands of military patches - symbols of unit pride, defiance and dark humor - cover display boards in a riot of color.

For Kilderov, who endured 55 days under Russian occupation in Nova Kakhovka in southern Ukraine, the objects are evidence of a war he insists must not be defin...