BBC News, Friend who inspired Shamima Begum to join IS mocks her as non-believer, 22 March 2023.
“Shamima Begum’s best friend, who she says inspired her to join IS, has been tracked down by the BBC having escaped from a detention camp in Syria.” This links to a podcast series on Shamima Begum. It refers to Sharmeema Begum (no relation), who was linked to Shamima Begum’s radicalisation process.
