In the wake of the worst terror attack in New Zealand's history, Prime Minister Jacinda Ardern has shown outstanding leadership on gun control, building a consensus for reasonable reform that other leaders have much to learn from, Michael Picard writes. New Zealand's response to the Christchurch mass-shooting shows that a country can find unity, rather than division, on gun reform. Strong and definitive leadership, a balanced approach to reforming gun laws, and... (GunPolicy.org)