New Zealand's Prime Minister Jacinda Ardern is a fine example of a leader rising to the Covid-19 challenge with empathy, reason and solidarity. Hagen Hopkins / Getty  
New Zealand's Prime Minister Jacinda Ardern is a fine example of a leader rising to the Covid-19 challenge with empathy, reason and solidarity. Hagen Hopkins / Getty  

When the pandemic recedes, the world may see the rise of new soft powers