Borderline disorder: the UN’s refugee treaty at 70

An international convention devised after the second world war is ill-suited to the refugee crises of today—and countries are increasingly unwilling to meet their obligations. Vancouver’s proposed response to a spate of drug overdoses is a sweeping decriminalisation; we ask whether the plan would work. And the bid to save a vanishingly rare “click language” in Africa.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer