ut-Tahrir sees Western influence as the cause of stagnation in the Muslim world, the reason for its failure to re-establish the caliphate thus far, and something in need of being attacked and uprooted. The Australian HT Media Pack describes Western governments as "the major obstacle to positive change in the Muslim World". Founder Nabhani has been described (by David Commins) as preaching that "British plots in particular and western imperialist conspiracies in general pervade the modern history of the Muslim world and ultimately explain its main lines of political evolution." In his book, The System of Islam, which is studied by all Hizb ut-Tahrir members, Nabhani states: If not for the influence of the deceptive Western culture and the oppression of its agents that will soon vanish, then the return to the domain of Islam in its ideology and system would be quicker than the blink of an eye. According to the same book, the Muslim world fell behind the West, (or other non-Muslim societies) not because it has failed to borrow some political, cultural or social concepts these civilizations had to offer, but because it did: Muslim stagnation commenced the day they abandoned this adherence to Islam and ... allowed the foreign culture to enter their lands and the Western concepts to occupy their minds. Western intellectual and cultural influence as well as its political and economic influence must be "uprooted" from the Muslim community. According to late HT global emir Abdul Qadeem Zallum, "The fierce struggle between the Islamic thoughts and the Kufr thoughts, ... will continue ... – a bloody struggle alongside the intellectual struggle – until the Hour comes and Allah (swt) inherits the Earth and those on it. This is why Kufr is an enemy of Islam, and this is why the Kuffar will be the enemies of the Muslims as long as there is Islam and Kufr in this world,..." According to the HT work Dangerous Concepts, among the tools used by Kufr nations to "finish off Islam by destroying its Aqeedah (creed) as a political Aqeedah" are such activities as "inter-faith and intercultural dialogues, and the viewpoint that both the Arab and Jewish races are the sons of Abraham." Regarding the activity of Hizb ut-Tahrir in Western countries, HT texts emphasize the necessity of Muslims choosing between an Islamic identity and a Western one. A British HT media Information Pack states that it