The most important duty lies on the shoulders of politicians and government officials of Muslim countries as well as Muslim intellectuals and those who can influence the hearts and minds of the people - namely, religious scholars, intellectuals, writers, journalists, poets, men of letters, and the scholars of the Muslim world. These people have to shoulder the major portion of the responsibility to inform the people of the causes that may disrupt the process of achieving this unity or take this firm divine handhold away from Muslims.
The Quran tells us clearly to "hold fast by the covenant of Allah all together and be not disunited." [The Holy Quran: 3: 103]. It is possible to "hold fast by the covenant of Allah" one by one, but the Quran has told us to do it "all together and be not disunited". We have been ordered to stick together and "be not disunited" even when adhering to the divine covenant. The Quran has advised us against adhering to this divine covenant one by one, let alone choosing to let go of the covenant or adhering to a satanic covenant. Muslims have to stay together and preserve their unity even when they are supposed to adhere to the divine covenant. That is the greatest issue for the world of Islam.
I hope Allah the Exalted will bestow success on all the members of the Muslim Ummah, Muslim nations, and Islamic governments. I hope He will make them realize the importance of this issue and help them show their understanding in action. May God bless the soul of our magnanimous Imam (r.a.) who called Muslims to unity in our time. I hope Allah the Exalted will further acquaint our hearts with the divine call. Hopefully, the future of the Muslim Ummah will be far better than its present situation.