Officer of the State Border Guard Service of Ukraine, the deputy commander of a border outpost with the call sign "Brat," stands on a destroyed bridge over the Dnipro River, which forms the state border between Ukraine and Belarus in the Chernigiv region, on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

A serviceman of the State Border Guard Service of Ukraine carries an UAV after a patrol flight along the Ukraine-Belarus border in Chernigiv region on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

Servicemen of the State Border Guard Service of Ukraine control an UAV during a patrol flight along the Ukraine-Belarus border in Chernigiv region on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

Servicemen of the State Border Guard Service of Ukraine prepare to launch an UAV for a patrol flight along the Ukraine-Belarus border in Chernigiv region on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

This photograph shows the closed "Slavutych" border crossing point on the border between Ukraine and Belarus in Chernigiv region on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

The "Ukraine" sign is visible on the road leading from the destroyed bridge over the Dnipro River, which forms the state border between Ukraine and Belarus in the Chernigiv region, on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

Officer of the State Border Guard Service of Ukraine, the deputy commander of a border outpost with the call sign "Brat," stands on a destroyed bridge over the Dnipro River, which forms the state border between Ukraine and Belarus in the Chernigiv region, on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)

Servicemen of the State Border Guard Service of Ukraine prepare an UAV for a patrol flight along the Ukraine-Belarus border in Chernigiv region on June 1, 2026, amid the Russian invasion of Ukraine. (Photo by Genya SAVILOV / AFP via Getty Images)