Why do leaders resign early? We speak with Pat Leahy of ‘The Irish Times’, Jacinda Ardern’s former chief of staff Raj Nahna, former Armenian president Armen Sarkissian, and historian Alex von Tunzelmann for a look at quitters through history.

Trump: One down, three to go... (in theory)
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Explainer 500: Why are Malaysia and Indonesia alone in taking on Grok?
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What can the world expect in 2026?
28:30