"Edmund Fitton-Brown, the former British ambassador to Yemen who is now a senior adviser to the Counter Extremism Project, a New York-based non-profit organisation, said: 'To me, this is clear material support for terrorism. X has a lamentable history of failing to police itself properly against extremists [and] this is a problem that has clearly got worse since Twitter became X. The very fact that they sell blue tick marks to terrorist groups like the Houthis and the Taliban is obviously a breach of sanctions and a breach of the law.'"