DCU's Paola Rivetti, an expert in Middle East politics, joins us to look at the fallout from the death of Iran's president in a helicopter crash last week. What role did he play in Iranian society? What does the succession process look like - and is there any scope for a more moderate leader?The Explainer is brought to you by The Journal. Providing open access to valuable journalism in Ireland has been the aim of The Journal for a decade. You can contribute to ensure we can keep questioning, investigating, debunking, explaining and informing at www.thejournal.ie/contribute/