Human rights law in many countries prevents their citizens from being made stateless. The UK has tried to strip the citizenship of some ISIL members, e.g. Shami

Human rights law in many countries prevents their citizens from being made stateless. The UK has tried to strip the citizenship of some ISIL members, e.g. Shamima Begum, but it’s tied up in court: https://en.m.wikipedia.org/wiki/Shamima_Begum https://en.m.wikipedia.org/wiki/Shamima_Begum