Here is the English version of the Hizb ut- Tahrir website. For the Mideast scholars on the web, here is the link to their pages in Arabic and various Turkic and European languages

In their own words, Hizb ut-Tahrir aims for world domination:

“Its aim is to resume the Islamic way of life and to convey the Islamic da’wah to the world. This objective means bringing the Muslims back to living an Islamic way of life in Dar al-Islam and in an Islamic society such that all of life’s affairs in society are administered according to the Shari’ah rules, and the viewpoint in it is the halal and the haram under the shade of the Islamic State, which is the Khilafah State. That state is the one in which Muslims appoint a Khaleefah and give him the bay’ah to listen and obey on condition that he rules according to the Book of Allah (swt) and the Sunnah of the Messenger of Allah (saw) and on condition that he conveys Islam as a message to the world through da’wah and jihad.

These are not stupid people – read the lists posted of members who have been arrested – you see highly educated professionals, army officers, doctors and engineers – these are the sons of the elite or the rising middle class of their nations. Men of modern technical and scientific training with the moral horizon of the 7th and 8th centuries fired with the vision of a reactionary myth of a golden age that never existed.

A dangerous combination and one history has seen before.