WASHINGTON — The Biden administration is marking the four-year anniversary of the detention in Russia of American businessman Paul Whelan, whose continued imprisonment is one of several major irritants in tattered relations between Washington and Moscow.
Secretary of State Antony Blinken said in a statement Wednesday that securing Whelan’s release remains a top administration priority.

Sofia Sandurskaya, Associated Press
Paul Whelan, a former U.S. marine who was arrested for allegedly spying, listens to the verdict in a courtroom June 15, 2020, at the Moscow City Court in Moscow, Russia. The Biden administration is marking the four-year anniversary of Whelan's detention in Russia.
U.S. officials had hoped to include Whelan in a prisoner swap earlier this month in which they traded detained WNBA star Brittney Griner for a convicted Russian arms dealer, Viktor Bout. The administration considers Whelan, like Griner, to have been wrongfully detained.
Blinken said Whelan and his family are “suffering through an unfathomable ordeal” and he again condemned the American’s conviction, which was based on secret evidence, and 16-year prison sentence.
“His detention remains unacceptable, and we continue to press for his immediate release at every opportunity,” Blinken said. “Our efforts to secure Paul’s release will not cease until he is back home with his family where he belongs.”
Whelan, a Michigan corporate security executive, is jailed in Russia on espionage charges that his family and the U.S. government have said are baseless. U.S. officials said Russia refused to consider including Whelan in the Griner deal, calling it a “one or none” decision.
“Paul and the Whelan family recently showed the entire country the meaning of generosity of spirit in celebrating a fellow American’s return while Russia continues its deplorable treatment of Paul as a bargaining chip,” said President Joe Biden’s national security adviser, Jake Sullivan.
The Whelan family supported the exchange that freed Griner, but expressed fears that Whelan would not be released for years.
His brother, David Whelan, said when the swap was announced, “I think we all realize that the math is not going to work out for Paul to come home anytime soon, unless the U.S. government is able to find concessions.”
Paul Whelan, 52, was sentenced in 2020.
In a statement Wednesday, David Whelan said, “Today is the 1,461st day that Paul has been held hostage by the Russian Federation. Russian authorities entrapped him four years ago today. How do you mark such an awful milestone when there is no resolution in sight?”
The anniversary, he said “is both awful and mundane, just another day that Paul has to suffer in a Russian labor colony for being in the wrong place at the wrong time.”
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner leaves a courtroom after a hearing, in Khimki just outside Moscow, May 13, 2022. More than four months after she was arrested at a Moscow airport for cannabis possession, Griner is to appear in court Monday, June 27, 2022 for a preliminary hearing ahead of her trial. The Phoenix Mercury star, considered in some polls to be the United States’ most gifted female athlete, could face 10 years in prison if convicted on charges of large-scale transportation of drugs. (AP Photo/Alexander Zemlianichenko, file)
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner leaves a courtroom after a hearing, in Khimki just outside Moscow, May 13, 2022. More than four months after she was arrested at a Moscow airport for cannabis possession, Griner is to appear in court Monday, June 27, 2022 for a preliminary hearing ahead of her trial. The Phoenix Mercury star, considered in some polls to be the United States’ most gifted female athlete, could face 10 years in prison if convicted on charges of large-scale transportation of drugs. (AP Photo/Alexander Zemlianichenko, file)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Friday, July 1, 2022. U.S. basketball star Brittney Griner is set to go on trial in a Moscow-area court Friday. The proceedings that are scheduled to begin Friday come about 4 1/2 months after she was arrested on cannabis possession charges at an airport while traveling to play for a Russian team. (AP Photo/Alexander Zemlianichenko)
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Friday, July 1, 2022. U.S. basketball star Brittney Griner is set to go on trial in a Moscow-area court Friday. The proceedings that are scheduled to begin Friday come about 4 1/2 months after she was arrested on cannabis possession charges at an airport while traveling to play for a Russian team. (AP Photo/Alexander Zemlianichenko)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Tuesday, July 26, 2022. American basketball star Brittney Griner returns Tuesday to a Russian courtroom for her drawn-out trial on drug charges that could bring her 10 years in prison if convicted. (Evgenia Novozhenina/Pool Photo via AP)
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Tuesday, July 26, 2022. American basketball star Brittney Griner returns Tuesday to a Russian courtroom for her drawn-out trial on drug charges that could bring her 10 years in prison if convicted. (Evgenia Novozhenina/Pool Photo via AP)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner greets her lawyers in a courtroom for a hearing, in Khimki just outside Moscow, Russia, Tuesday, Aug. 2, 2022. Since Brittney Griner last appeared in her trial for cannabis possession, the question of her fate expanded from a tiny and cramped courtroom on Moscow's outskirts to the highest level of Russia-US diplomacy. (Evgenia Novozhenina/Pool Photo via AP)
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner greets her lawyers in a courtroom for a hearing, in Khimki just outside Moscow, Russia, Tuesday, Aug. 2, 2022. Since Brittney Griner last appeared in her trial for cannabis possession, the question of her fate expanded from a tiny and cramped courtroom on Moscow's outskirts to the highest level of Russia-US diplomacy. (Evgenia Novozhenina/Pool Photo via AP)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Tuesday, Aug. 2, 2022. American basketball star Brittney Griner was back in court on Tuesday for her trial for cannabis possession amid U.S. diplomatic efforts to secure her release. During the hearing, prosecutors called a state narcotics expert who analyzed cannabis found in Griner's luggage. (AP Photo/Alexander Zemlianichenko)
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Tuesday, Aug. 2, 2022. American basketball star Brittney Griner was back in court on Tuesday for her trial for cannabis possession amid U.S. diplomatic efforts to secure her release. During the hearing, prosecutors called a state narcotics expert who analyzed cannabis found in Griner's luggage. (AP Photo/Alexander Zemlianichenko)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki outside Moscow, Russia, Thursday, July 7, 2022. Closing arguments in Brittney Griner's cannabis possession case in Russia are set for Thursday. That's nearly six months after the American basketball star was arrested at a Moscow airport in a case that has reached the highest levels of U.S.-Russia diplomacy. (AP Photo/Alexander Zemlianichenko, File)
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki outside Moscow, Russia, Thursday, July 7, 2022. Closing arguments in Brittney Griner's cannabis possession case in Russia are set for Thursday. That's nearly six months after the American basketball star was arrested at a Moscow airport in a case that has reached the highest levels of U.S.-Russia diplomacy. (AP Photo/Alexander Zemlianichenko, File)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner holds images standing in a cage at a court room prior to a hearing, in Khimki just outside Moscow, Russia, Wednesday, July 27, 2022. (AP Photo/Alexander Zemlianichenko, Pool, File)
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner holds images standing in a cage at a court room prior to a hearing, in Khimki just outside Moscow, Russia, Wednesday, July 27, 2022. (AP Photo/Alexander Zemlianichenko, Pool, File)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Thursday, July 7, 2022. (AP Photo/Alexander Zemlianichenko, File)
Alexander Zemlianichenko
FILE - WNBA star and two-time Olympic gold medalist Brittney Griner is escorted to a courtroom for a hearing, in Khimki just outside Moscow, Russia, Thursday, July 7, 2022. (AP Photo/Alexander Zemlianichenko, File)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner, center, is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (AP Photo/Alexander Zemlianichenko)
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner, center, is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (AP Photo/Alexander Zemlianichenko)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner, center, is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (AP Photo/Alexander Zemlianichenko)
Alexander Zemlianichenko
WNBA star and two-time Olympic gold medalist Brittney Griner, center, is escorted in a court room prior to a hearing, in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (AP Photo/Alexander Zemlianichenko)
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Russian prosecutors seek 9 1/2-year sentence for Griner
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner stands in a cage in a courtroom prior to a hearing in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (Evgenia Novozhenina/Pool Photo via AP)
Evgenia Novozhenina
WNBA star and two-time Olympic gold medalist Brittney Griner stands in a cage in a courtroom prior to a hearing in Khimki just outside Moscow, Russia, Thursday, Aug. 4, 2022. Closing arguments in Brittney Griner's cannabis possession case are set for Thursday, nearly six months after the American basketball star was arrested at a Moscow airport in a case that reached the highest levels of US-Russia diplomacy. (Evgenia Novozhenina/Pool Photo via AP)