This photograph shows a chalkboard with the inscription "2023-2024 Year of Victory, Glory to Ukraine" inside a destroyed school in the village of Dovhenke, Kharkiv region, on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

This photograph shows a barbed wire defence line running across a field at an undisclosed location in the Kharkiv region, eastern Ukraine, on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

A photographer takes photos of a crater formed by a shelling in 2022 in the village of Dovhenke, Kharkiv region, on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

This photograph shows a crater formed by a shelling in 2022 in the village of Dovhenke, Kharkiv region, on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

A vehicle drives on a road covered with anti-drone nets in the Kharkiv region on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

This photograph shows a forest belt near the village of Dovhenke, burned during the battles for the village in 2022, in the Kharkiv region on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

This photograph shows dragon's teeth, pyramidal anti-tank obstacles of reinforced concrete, and a barbed wire defence line at an undisclosed location in the Kharkiv region, eastern Ukraine, on May 1, 2026, amid the Russian invasion of Ukraine. (Photo by Ivan SAMOILOV / AFP via Getty Images)

Revellers arrive to attend a free-party at a military site in Cornusse, near Bourges, central France on May 2, 2026. A free party bringing together around 20,000 partygoers began on May 1, 2026, on a military site near Bourges, described as "very dangerous" by the authorities, in a context of stricter legislation against these illegal techno gatherings. (Photo by Kenzo TRIBOUILLARD / AFP via Getty Images)