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Jacinda Ardern was 37 erstwhile she was elected premier curate of New Zealand, becoming the world's youngest pistillate caput of government. After leaving bureau 2 years ago, she moved to Boston, wherever she's serving arsenic a chap astatine Harvard University. She's besides written a caller book, "A Different Kind of Power." Ardern talks with "Sunday Morning" nationalist analogous Robert Costa astir her acquisition starring a federation (including passing a prohibition connected semi-automatic firearms); the value of exhibiting kindness and empathy successful politics; and the challenges of being a moving mother, aft giving commencement portion successful office.