The Sunni-Shia divide is among the most consequential fault lines in Islamic history — yet it is rarely examined with the care and precision it deserves.

In this opening episode of Deep Dive: Iran, Imam Tom Facchine returns to the formative period following the death of the Prophet ﷺ, tracing the theological disputes, political tensions, and communal fractures that gave rise to Shia Islam as a distinct tradition.

Drawing on primary hadith sources, this episode resists both the polemical impulse to weaponize sectarian differences and the revisionist tendencies to minimize it.

The goal is neither condemnation nor uncritical solidarity — but an informed understanding of where these divisions come from and what they actually mean.

00:00 Is Iran a Hero or a Sectarian Monster?
00:44 Two Extremes: Polemic vs. Erasure
04:16 Finding the Middle Ground on Sectarianism
05:14 Shi'ism: A Whisper That Grew Into a Shout
07:09 Fatima (RA)'s Inheritance and the First Fracture
09:08 Why Did Ali (RA) Delay His Oath of Allegiance?
13:29 What the Hadith Actually Says — and Doesn't
18:21 The Council, Abdurrahman (RA), and Uthman (RA)'s Election
21:37 Was Uthman (RA) a Puppet? Debunking the Conspiracy
32:20 The Cult of Personality Around Ali (RA)
34:31 Three Traumas That Changed Everything
35:04 The Assassination of Uthman (RA) and Civil War
36:00 Hasan (RA)'s Conditional Abdication to Muawiyah (RA)
37:12 Karbala: The Wound That Never Healed
38:27 Post-Karbala: Revolt, Repentance, and Revenge
41:28 The Kaysanites: The First Identifiable Shia Sect
42:51 Ghadir Khumm and the Revisionist Origin Story
52:12 Do Twelver Sources Claim the Quran Is Corrupted?
53:42 Attacking the Companions as an Act of Worship
58:41 Honest Critique: The Responsibility of Every Muslim
01:03:23 Wala and Bara: Loyalty Has a Gradient
01:07:53 Do We Have Solidarity With the Muslims of Iran?
01:09:25 Good Fences Make Good Neighbors