Washington (AFP) – President Joe Biden met Friday with relatives of basketball star Brittney Griner and fellow US citizen Paul Whelan, who are both imprisoned in Russia, the White House said. In separate Oval Office meetings, Biden conferred first with Whelan’s sister, Elizabeth Whelan, and then Cherelle Griner, the wife of the gold medal athlete. There was no immediate word from the White House on how these sessions played out, but national security spokesman John Kirby earlier told reporters that “discussions are ongoing” to secure Griner’s release. “The president is not going to let up. He’…