FILE - U.S. scientist Karl Deisseroth, professor of Departments of Bioengineering and Psychiatry at Stanford University, shows his trophy for "Life Sciences" field during the Japan Prize presentation ceremony Thursday, April 13, 2023, in Tokyo. (AP Photo/Eugene Hoshiko, File)

FILE - A national library employee shows the gold Nobel Prize medal awarded to the late novelist Gabriel Garcia Marquez in Bogota, Colombia, April 17, 2015. (AP Photo/Fernando Vergara, File)

FILE - A Nobel diploma and medal are displayed, Dec. 8, 2020, during a ceremony in New York. (Angela Weiss/Pool Photo via AP, File)

Ukraine's President Volodymyr Zelenskyy and German Chancellor Friedrich Merz attend a commemorative ceremony at the memorial of fallen Ukrainian soldiers at Independence Square in Kyiv, Ukraine, Sunday, Oct. 4, 2026. (AP Photo/Dan Bashakov)

Ukraine's President Volodymyr Zelenskyy and German Chancellor Friedrich Merz attend a commemorative ceremony at the memorial of fallen Ukrainian soldiers at Independence Square in Kyiv, Ukraine, Sunday, Oct. 4, 2026. (AP Photo/Dan Bashakov)

Ukraine's President Volodymyr Zelenskyy meets German Chancellor Friedrich Merz before a commemorative ceremony at the memorial of fallen Ukrainian soldiers at Independence Square in Kyiv, Ukraine, Sunday, Oct. 4, 2026. (AP Photo/Dan Bashakov)

German Chancellor Friedrich Merz speaks to media with National Academy of science building damaged after a Russian drone strike, on the background, Kyiv, Ukraine, Sunday, Oct. 4, 2026. (AP Photo/Evgeniy Maloletka)

Ukraine's President Volodymyr Zelenskyy, centre, and German Chancellor Friedrich Merz speak to media with National Academy of science building damaged after a Russian drone strike, on the background, Kyiv, Ukraine, Sunday, Oct. 4, 2026. (AP Photo/Evgeniy Maloletka)