A British-born woman who went to Syria as a schoolgirl to join the Islamic State (IS) group lost her latest appeal on Friday over the removal of her British citizenship. The British government took away Shamima Begum’s citizenship on national security grounds in 2019, shortly after she was found in a detention camp in Syria. Begum, now 24, argued the decision was unlawful, in part because British officials failed to properly consider whether she was a victim of trafficking, an argument that was rejected by a lower court in February 2023. The Court of Appeal in London rejected her appeal on Fri…