![Uncredited FILE - Russian opposition activist Vladimir Kara-Murza gestures while standing in a defendants’ cage at the Moscow City Court in Moscow, Russia, on July 31, 2023. Kara-Murza, 42, was convicted of treason for publicly denouncing the war in Ukraine and sentenced to 25 years in prison earlier this year. (AP Photo, File)](https://mapi.associatedpress.com/v2/items/ff80d6c34328402f96a0976039fe3bf3/preview/preview.jpg?s=680x&wm=false)
FILE - Russian opposition activist Vladimir Kara-Murza gestures while standing in a defendants’ cage at the Moscow City Court in Moscow, Russia, on July 31, 2023. Kara-Murza, 42, was convicted of treason for publicly denouncing the war in Ukraine and sentenced to 25 years in prison earlier this year. (AP Photo, File)
![Jacquelyn Martin Sen. Ben Cardin, D-Md., left, Chair of the Senate Foreign Relations Committee, Sen. Chris Coons, D-Del., and James Roscoe, Deputy Head of Mission at the British Embassy Washington, listen as Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, right, speaks about her husband during an event calling for the immediate release of Kara-Murza, who is a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)](https://mapi.associatedpress.com/v2/items/a39563469f294430b9e402ddf47bd516/preview/preview.jpg?s=680x&wm=false)
Sen. Ben Cardin, D-Md., left, Chair of the Senate Foreign Relations Committee, Sen. Chris Coons, D-Del., and James Roscoe, Deputy Head of Mission at the British Embassy Washington, listen as Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, right, speaks about her husband during an event calling for the immediate release of Kara-Murza, who is a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)
![Jacquelyn Martin Sen. Roger Wicker, R-Miss., speaks during an event calling for the immediate release of Vladimir Kara-Murza, a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)](https://mapi.associatedpress.com/v2/items/e8fa7ad6225342e988b0a35fb5a313c2/preview/preview.jpg?s=680x&wm=false)
Sen. Roger Wicker, R-Miss., speaks during an event calling for the immediate release of Vladimir Kara-Murza, a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)
![Jacquelyn Martin Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, listens during an event calling for the immediate release of her husband, who is a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)](https://mapi.associatedpress.com/v2/items/81c99ad6425f497e91215955d3045019/preview/preview.jpg?s=680x&wm=false)
Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, listens during an event calling for the immediate release of her husband, who is a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)
![Jacquelyn Martin Sen. Ben Cardin, D-Md., Chair of the Senate Foreign Relations Committee, speaks during an event calling for the immediate release of Vladimir Kara-Murza, a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)](https://mapi.associatedpress.com/v2/items/2c1f3af756d5497eb8a8e8273923061c/preview/preview.jpg?s=680x&wm=false)
Sen. Ben Cardin, D-Md., Chair of the Senate Foreign Relations Committee, speaks during an event calling for the immediate release of Vladimir Kara-Murza, a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)
![Jacquelyn Martin Sonata Coulter, State Dept. Deputy Assistant Secretary, Bureau of European and Eurasian Affairs, left, greets Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, right, after speaking about Kara-Murza, during an event calling for the immediate release of the a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)](https://mapi.associatedpress.com/v2/items/8380787d91cc499493bc2c6a3c73e345/preview/preview.jpg?s=680x&wm=false)
Sonata Coulter, State Dept. Deputy Assistant Secretary, Bureau of European and Eurasian Affairs, left, greets Evgenia Kara-Murza, human rights advocate and wife of Vladimir Kara-Murza, right, after speaking about Kara-Murza, during an event calling for the immediate release of the a Russian opposition leader and journalist imprisoned by the Russian government, Tuesday, April 9, 2024, on Capitol Hill in Washington. (AP Photo/Jacquelyn Martin)