Hizb ut-Tahrir Wilayah of Pakistan held a book launching ceremony of its manifesto in Lahore. The title of the booklet is 'Pakistan, Khilafah "Caliphate" and the unification of the Muslim world'. Speaking at the occasion the spokesman of Hizb ut-Tahrir Pakistan, Mr. Naveed Butt said that for the past fifty years Hizb ut-Tahrir is working for the reestablishment of the Khilafah