I want to know the answer to the following question:
What is the Shia Islam doctrine of religious, spiritual and political leadership of the Ummah?
All the background I'm provided with is that "The Shia believe that the Imams are the true Caliphs or rightful successors of Muhammad, and further that Imams are possessed of divine knowledge and authority (Ismah) as well as being part of the Ahl al-Bayt, the family of Muhammad.". Is that enough to answer the question?
Answer: no