FILE - NYU student researchers sit on top of a rock overlooking the Helheim glacier in Greenland, Aug. 16, 2019. (AP Photo/Felipe Dana, File)

FILE - Two groups from the Poseidon Expeditions tour company look at a glacier in the Scoresby Sund, Sept. 7, 2023, in Greenland. (AP Photo/Chris Szagola, File)

In this photo provided by the Ukrainian Emergency Service, a firefighter, right, comforts a woman after her home was damaged in a Russian air attack in Odesa, Ukraine, Thursday, Sept. 17, 2026. (Ukrainian Emergency Service via AP)

A woman cleans her apartment after a Russian missile exploded near her home in Kyiv, Ukraine, Thursday, Sept. 17, 2026. (AP Photo/Dan Bashakov)

A missile crater is seen in the foreground, of a damaged apartment building following Russia's air attack in Kyiv, Ukraine, Thursday, Sept. 17, 2026. (AP Photo/Dan Bashakov)

In this photo provided by the Ukrainian Presidential Press Office, Ukrainian President Volodymyr Zelenskyy, top center right, and EU officials attend a summit in a Carpathian 8 Summit in Bukovel, western Ukraine, Friday, Sept. 18, 2026. (Ukrainian Presidential Press Office via AP)

In this photo provided by the Ukrainian Presidential Press Office, Poland's Prime Minister Donald Tusk, right, is welcomed by Ukraine's President Volodymyr Zelensky and his wife Olena Zelenska during a Carpathian 8 Summit in Bukovel, western Ukraine, Friday, Sept. 18, 2026. (Ukrainian Presidential Press Office via AP)

Edward Curran, right, works on the floor at the New York Stock Exchange in New York, Monday, Sept. 14, 2026. (AP Photo/Seth Wenig)