Elizabeth Whelan, right, hugs her brother Paul Whelan at Andrews Air Force Base, Md., following his release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Alex Brandon)

This photo combination shows Wall Street Journal reporter Evan Gershkovich, left, corporate security executive Paul Whelan, top right, and Russian opposition figure Ilya Yashin. (AP Photo)

President Joe Biden, left, hugs Alsu Kurmasheva at Andrews Air Force Base, Md., following her release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Alex Brandon)

A Russian Plane, believed to be carrying released Russian prisoners, leaves the Ankara Airport, Turkey, Thursday, Aug. 1, 2024. (AP Photo)

President Joe Biden, from left, and Vice President Kamala Harris greet reporter Evan Gershkovich at Andrews Air Force Base, Md., following his release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Alex Brandon)

FILE - Wall Street Journal reporter Evan Gershkovich stands in a glass defendant's booth in a courtroom in Yekaterinburg, Russia, on June 26, 2024. (AP Photo, File)

FILE - Paul Whelan, a former U.S. Marine who was arrested on espionage charges, listens to the verdict in court in Moscow, Russia, June 15, 2020. (Sofia Sandurskaya/Moscow News Agency via AP, File)

In this image made from video provided by Russian Federal Security Service via RTR on Thursday, Aug. 1, 2024, Paul Whelan, center, a former U.S. Marine who was arrested on espionage charges, is escorted by Russian Federal Security Service agents, left, as they arrive at an airport outside Moscow, Russia. (Russian Federal Security Service/RTR via AP)

Russian President Vladimir Putin, front, greets released Russian prisoners and relatives at the government terminal of the Vnukovo airport in Moscow, Russia, Aug. 1, 2024. (Gavriil Grigorov, Sputnik, Kremlin Pool Photo via AP)

Reporter Evan Gershkovich hugs his mother Ella Milman, left, at Andrews Air Force Base, Md., following his release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. Looking on at right is Elizabeth Whelan, sister of released prisoner Paul Whelan. (AP Photo/Alex Brandon)

FILE - Wall Street Journal reporter Evan Gershkovich stands listening to the verdict in a glass cage of a courtroom inside the building of "Palace of justice," in Yekaterinburg, Russia, July 19, 2024. (AP Photo, File)

Russian President Vladimir Putin listens to the head of the Republic of Mordovia Artem Zdunov during their meeting at the Kremlin in Moscow, Russia, Thursday, Aug. 1, 2024. (Gavriil Grigorov, Sputnik, Kremlin Pool Photo via AP)

FILE - Russian opposition activist and former municipal deputy of the Krasnoselsky district Ilya Yashin stands inside a glass cubicle in a courtroom prior to a hearing in Moscow, Russia, Friday, Dec. 9, 2022. (Yury Kochetkov/Pool Photo via AP, File)

A plane carrying reporter Evan Gershkovich, Alsu Kurmasheva and Paul Whelan arrives at Andrews Air Force Base, Md., following their release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Manuel Balce Ceneta)

In this image made from video provided by Russian Federal Security Service via RTR on Thursday, Aug. 1, 2024, Germanys Rico Krieger, center, and a Russian Federal Security Service agent, left, leave a bus as they arrive at an airport outside Moscow, Russia. (Russian Federal Security Service/RTR via AP)

FILE - Alsu Kurmasheva, an editor for the U.S. government-funded Radio Free Europe/Radio Liberty's Tatar-Bashkir service, attends a court hearing in Kazan, Russia on May 31, 2024. Kurmasheva, a dual Russia-U.S. national employed by Radio Free Europe/Radio Liberty, was convicted July 19 of spreading false information about the Russian army and sentenced to 6½ years in prison. Her family and RFE/RL have rejected the charges. (AP Photo, File)

President Joe Biden looks on as Alsu Kurmasheva hugs a family member on the tarmac after arriving at Andrews Air Force Base, Md., following their release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Manuel Balce Ceneta)

FILE - Russian opposition activist Vladimir Kara-Murza gestures standing in a glass cage in a courtroom during announcement of the verdict on appeal at the Moscow City Court in Moscow, Russia, on July 31, 2023. Kara-Murza, a prominent opposition politician and a dual Russian-U.K. citizen, was convicted of treason and other charges in 2023 and sentenced to 25 years in prison. He has rejected the charges as politically motivated. (AP Photo, File)

In this image taken from video, employees at the Wall Street Journal in New York applaud at the news that reporter Evan Gershkovich, pictured top left, has been released as part of a prisoner swap with Russia, the United States and several other countries, Thursday, Aug. 1, 2024. (Vaughn Sterling/The Wall Street Journal via AP)

This image released by the White House shows Evan Gershkovich, left, Alsu Kurmasheva, right, and Paul Whelan, second from right, and others aboard a plane, Thursday, Aug. 1, 2024, following their release from Russian captivity. (White House via AP)

President Joe Biden speaks after greeting reporter Evan Gershkovich, Alsu Kurmasheva and Paul Whelan at Andrews Air Force Base, Md., following their release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Alex Brandon)

Elizabeth Whelan, left, greets her brother Paul Whelan at Andrews Air Force Base, Md., following his release as part of a 24-person prisoner swap between Russia and the United States, Thursday, Aug. 1, 2024. (AP Photo/Alex Brandon)

President Joe Biden delivers remarks on a prisoner swap with Russia from the State Dining Room of the White House, Thursday, Aug. 1, 2024, in Washington, as the family of hostage Evan Gershkovich, looks on. (AP Photo/Alex Brandon)

In this image made from video provided by Russian Federal Security Service via RTR on Thursday, Aug. 1, 2024, Germany's Patrick Schoebel, center, is escorted by a Russian Federal Security Service agent, left, as they arrive at an airport outside Moscow, Russia. (Russian Federal Security Service/RTR via AP)

Bibi Butorin, Pavel Butorin, Miriam Butorin, Elizabeth Whelan, President Joe Biden, Danielle Gershkovich, Anthony Huczek, Mikhail Gershkovich, Ella Milman, Daniil Kara-Murza, Evgeniya Kara-Murz, and Ekaterina Kara-Murza, as Biden delivers remarks on a prisoner swap with Russia from the State Dining Room of the White House, Thursday, Aug. 1, 2024, in Washington. (AP Photo/Alex Brandon)