One of the controversial issues among Muslims is the relationship of Shi’as and Sunnis. There has been some conflicts between Shi’as and Sunnis during the Islamic history.
We can find some ideas in religious texts that could be construed in a way that help to this conflict. Of course, there are many examples of the teachings in Quran and Hadiths that call Muslims for unity and brotherhood.
How do you think we (Muslims) should understand Islam in the world today? What is our religious obligations toward other Muslims (from other sects)?