Jacinda Ardern, 38, became New Zealand's prime minister in October 2017.
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New Zealand's prime minister Jacinda Ardern has been applauded for her actions following the Christchurch mosque shootings. Here's everything you need to know about her
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Here's what we know about the victims of the mosque mass shootings in New Zealand that killed at least 50 people
At least 50 people from various countries are dead, and dozens more remain in hospital.
Sinéad Baker, Business Insider US