U.S. President Donald Trump's envoys Steve Witkoff, center, and Jared Kushner, right, arrive in Kyiv, Ukraine, Sunday, Sept. 6, 2026. (AP Photo/Francisco Seco)

Ukraine's President Volodymyr Zelenskyy, right, stands with Steve Witkoff, center, and Jared Kushner, U.S. President Donald Trump's envoys, at the end of their joint news conference in Kyiv, Ukraine, Sunday, Sept. 6, 2026. (AP Photo/Francisco Seco)

In this photo provided by the Ukrainian Presidential Press Office, Ukraine's President Volodymyr Zelenskyy talks with U.S. President Donald Trump's envoys Jared Kushner and Steve Witkoff at Mariinsky palace in Kyiv, Ukraine, Sunday, Sept. 6, 2026. (Ukrainian Presidential Press Office via AP)

In this photo provided by the Ukrainian Presidential Press Office, Ukraine's President Volodymyr Zelenskyy, right, talks with Jared Kushner, U.S. President Donald Trump's envoy, at Mariinsky palace in Kyiv, Ukraine, Sunday, Sept. 6, 2026. (Ukrainian Presidential Press Office via AP)

In this photo provided by the Ukrainian Presidential Press Office, Ukraine's President Volodymyr Zelenskyy, center, walks with U.S. President Donald Trump's envoys Jared Kushner, right, and Steve Witkoff at Mariinsky palace in Kyiv, Ukraine, Sunday, Sept. 6, 2026. (Ukrainian Presidential Press Office via AP)

Co-leaders of Alternative for Germany party, or AfD, Alice Weidel, center, and Tino Chrupalla, right, and top candidate for the Saxony-Anhalt state elections Ulrich Siegmund, left, leave a press conference in Berlin, Germany, Monday, Sept. 7, 2026. (AP Photo/Ebrahim Noroozi)

Co-leader of Alternative for Germany party, or AfD, Alice Weidel, leaves for a press conference in Berlin, Germany, Monday, Sept. 7, 2026. (AP Photo/Ebrahim Noroozi)

People line up to pay their respects to the former Bosnian Serb army commander Ratko Mladic, seen on the flags, who died last week while serving a life sentence for genocide and other atrocities during the war in Bosnia, at the St. Luka Church, in Belgrade, Serbia, Monday, Sept. 7, 2026. (AP Photo/Marko Drobnjakovic)