It's been a week since Alexei Navalny started a hunger strike in a Russian penal colony outside Moscow. Navalny, President Vladimir Putin's fiercest domestic critic, is serving a prison term for violating probation from an earlier conviction.
He also survived a poisoning he blames on the Kremlin last year.
Host Robin Young gets the latest from the BBC's Sarah Rainsford.
This BBC interview can be heard in the Here & Now podcast or with the WBUR app.