This is unlikely to be possible legally: Begum remains a British citizen and the Geneva conventions proscribe governments from making their citizens stateless. British citizens who have travelled out to fight for or support Isis pose a security risk. Radicalised Europeans who have returned from Syria have committed terrorist attacks on European soil, including the Paris attacks in November 2015. The correct approach to British citizens who hold the abhorrent views of Begum is not to abandon our values or to junk due process. At the very least, if Begum is deemed a security threat, she can be monitored and compelled to take part in a deradicalisation programme.
Source: The Guardian February 17, 2019 06:00 UTC