Biden’s conversation with Griner’s wife, Cheryl Griner, followed Brittney Griner’s personal appeal to the president in a handwritten letter from the basketball player that was received by the White House on Monday. In the letter, Griner acknowledged her fears that she would spend forever in Russian custody and asked Biden “not to forget about me and the other American prisoners.” Griner has been detained for four months and is currently on trial in Russia, accused of possessing vapor cartridges containing cannabis oil. “The President called Cherelle to assure her that he is working to secure Brittney’s release as soon as possible, as well as the release of Paul Whelan and other US citizens illegally held or held hostage in Russia and around the world. House said in a statement. “He also read her a draft of the letter the President is sending to Brittney Griner today.” Biden offered his support to the family and pledged to make sure they get “all the help possible” while the administration continues steps to win Brittney Griner’s release, the White House said. Griner is in the middle of a trial in Russia that began last week after she was arrested on February 17 on charges of possessing cannabis oil while returning to play for her Russian team. The trial is scheduled to resume Thursday. Less than 1% of defendants in Russian criminal cases are acquitted, and unlike in American courts, acquittals can be overturned. Cherelle Griner told CBS Mornings in an interview Tuesday that it was “frustrating” for her that she had yet to hear from Biden during Brittney Griner’s detention.