Many Islamic scholars have gone into the details of how the Islamic Khilafah should work, and how the government should be structured. This is an issue best left for another discussion, because it cannot be summarized here except to say:

• The Khilafah must include all Muslim nations in the world.
• There must be only one Khaleefah or Ameer, with all Muslims giving him their bay'ah or allegiance.
• There must be a shoora council that gives advice and help to the Khaleefah. 
• Shariah law must be implemented in the Islamic state regarding all issues.
• There must be only one military, with a single leadership appointed by the Khaleefah.
• There must be only one currency for the Islamic state.
• There must be no discrimination against any group, ethnicity or nationality. All Muslims must be treated equally.
• The Arabic language should be used as a uniting language to allow various ethnic groups to communicate. It should be taught as a second language, in addition to the local languages of every ethnic group.

The first step is for Muslims to feel that all Muslims are one people and one nation. There is no difference between them because of race or color, and the best of them are the most pious. Once the majority of Muslims in the world have realized this fact, that we are all brothers in Islam, and once they have established the Khilafah in their own hearts, it will become a reality on our lands.

Muslims around the world must realize that the "Muslim" countries that exist today are a temporary stage that the Islamic Ummah is passing through. It is simply the post-colonial stage, and it is not a permanent situation. A person cannot be a Muslim if they are content with the current situation. This is a temporary phase we are passing through, and the goal is to unite the Ummah into a single nation, with one leader, ruled by the Islamic Shariah.

Once all Muslims have accepted this fact, they must also live their lives by the Islamic Shariah law. How can we claim to be Muslims if we do not follow what Allah (Subhaanahu Wa Ta'Ala) and His Messenger (pbuh) have commanded us to do? We must also know that the Islamic Shariah law is the most perfect and just system, and establishing it is for our own benefit because it will result in a healthy society free of crime and injustice.

Finally, in addition to acting like a single Ummah and living by the Islamic Shariah, Muslims must also increase their knowledge about Islam. They must start to build their knowledge by studying the Qur'an and its tafseer from trustworthy scholars. They must study the seerah and the sunnah of prophet Muhammad (pbuh), and read more about Islamic Aqeedah and Fiqh. What is more important than learning the religion of Allah (Subhaanahu Wa Ta'Ala)??

With these first steps, it will become easy to establish the Khilafah. Once the Ummah is ready with these basic principles, and with Allah's (Subhaanahu Wa Ta'Ala) guidance and help, the Khilafah will be established to unite all Muslims into one Ummah again inshallah.

May Allah (swt) guide us all to the right path, and may Allah (swt) unite all Muslims across the entire world into one nation, and make them a single brotherhood and a single Ummah living under Islamic Shariah ... Ameen.