The restoration of the caliphate that ended in the last century when the Ottoman Empire collapsed triggered the establishment of the Muslim Brotherhood in the late 1980s, and later the Hizb ut-Tahrir in the 1950s. By the way, the Muslim Brotherhood is the largest Muslim organization worldwide. It's an international organization that has branches here in Canada also. The Hizb ut-Tahrir is also an international organization with branches in Canada.
The issue of establishing the caliphate is essential for Muslims. This is part of the religion, part of the goal. The end goal is to establish a caliphate in which Islamic law will be implemented.
One of the imams who warns of the radicalization, the Wahhabism, etc., in Canada, said in an article that Canada should let all countries in the Middle East establish the Islamic law, the sharia. For him this is the solution. Sharia law, Islamic law, should be implemented. Even though he denounced the Wahhabism, he supports sharia law.
The difference between these groups is focused mainly on the tactics to realize this goal of the caliphate and the Islamic law. The Islamic State, ISIS, like al-Qaeda, supports using the violent jihad in the first stage. Others, like Sheikh Yusuf al-Qaradawi, who is the most important prominent scholar in the Muslim world and the spiritual leader of the Muslim Brotherhood, said in 2003 that we have to use the dawah, which means propagating Islam, and immigration as a tool in order to take over Europe. We have to do it in stages. Don't do it, first of all, to resort to jihad, because that will cause the other side to take actions against it.
Hizb ut-Tahrir is promoting this as the main agenda to establish the caliphate, and they changed the policy very recently because of the establishment of the caliphate. If they're promoting the caliphate, and the caliphate already exists, what's the role of Hizb ut-Tahrir today? They decided that they should take action for the first time, not only preaching to and educating the Muslims, but also taking concrete actions in order to establish the new caliphate.
The difference between all the groups is about what the specific and the right conditions to establish the caliphate are. Hizb ut-Tahrir said that the caliphate, under the rule of Abu Bakr al-Baghdadi, was not properly established. They can do it. By the way, one of the discussions about the caliphate was held here in Canada. They talked about it very openly. This is an issue that's being discussed. It's not being concealed. They talk about it, and when they talk about a caliphate, what they intend, in fact, is Islamic law.