GOLCUK, TURKEY - AUGUST 21: Turkish Navy underwater assault (SAT) commandos perform a drill during a Teknofest Blue Homeland event at the Naval Command on August 21, 2026 in Golcuk, Turkey. Taking place from August 20–23, Teknofest Blue Homeland is the maritime edition of Turkey's Teknofest event, showcasing the nation's naval technology and defence capabilities. (Photo by Burak Kara/Getty Images)

GOLCUK, TURKEY - AUGUST 21: A Turkish sailor stands on a navy submarine during a Teknofest Blue Homeland event at the Naval Command on August 21, 2026 in Golcuk, Turkey. Taking place from August 20–23, TEKNOFEST Blue Homeland is the maritime edition of Turkey's TEKNOFEST event, showcasing the nation's naval technology and defence capabilities. (Photo by Burak Kara/Getty Images)

Krasimir Kirov, curator in the "Nature" department at the Regional History Museum Ruse, examines a bone in the dried-out Danube riverbed near the village of Ryahovo on August 21, 2026, during an organised fossil hunt after a record low water level revealed mammoth bones there at the end of July. (Photo by Dimitar KYOSEMARLIEV / AFP via Getty Images)

People walk along the dried river bed of the Danube River near the city of Ruse on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)

This aerial photograph shows excavators digging sand from the bottom of a dried-up branch of the Danube River near the city of Ruse, on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)

People walk along the dried river bed of the Danube River near the city of Ruse on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)

People walk along the dried river bed of the Danube River near the city of Ruse on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)

People walk along the dried river bed of the Danube River near the city of Ruse on August 21, 2026. The Danube -- which runs from the Black Forest mountains of western Germany through 10 countries to the Black Sea -- has dropped to record low levels in parts due to prolonged rain shortages and successive heatwaves since May 2026. (Photo by Nikolay DOYCHINOV / AFP via Getty Images)