A "continuity candidate" or the ultimate "nepo baby"?
Iran’s new supreme leader is Mojtaba Khamenei, a 56-year-old cleric and son of the previous ayatollah.
Khamenei was once described as "the power behind the robes" in his father's regime - but very little is known about him.
So, who is Mojtaba Khamenei, and how was he chosen? What does his selection mean for the future of the Iranian regime and people?
And with few signs that the war with Israel and the US will abate any time soon, what difference will he make to the outcome of the conflict?
Niall is joined by Dr Louise Kettle, assistant professor of international relations at the University of Nottingham.
Have you got a question for Niall? Email the show – why@sky.uk
