(BBC) Allowing runaway Shamima Begum to return to the UK to challenge her loss of British citizenship “would create significant national security risks,” the Supreme Court has been told.
Ms Begum, 21, was one of three east London schoolgirls who joined the so-called Islamic State group in 2015.
A lower court ruled she could leave a Syrian refugee camp to attend the case.
But government lawyers said there was no guarantee the intelligence service could monitor her among other demands.
In an appeal to the Supreme Court, government barrister Sir James Eadie QC said the home secretary believed Ms Begum posed a real threat.
