The British branch of a world-wide radical Islamist group, Hizb ut-Tahrir, held a conference in London on Saturday, in which speakers called for the overthrow of Muslim governments and their replacement with a single Islamic state, known as the caliphate. According to Hizb ut-Tahrir’s website, “thousands” of people attended the conference.
http://www.ynetnews.com/articles/1,7340,L-3433932,00.html
