The coronavirus pandemic is a multi-layered global crisis. It starts with public health, but it reaches deep into the world economy and the global security system too. Could Covid-19 fears be used for malign purposes? Will it enhance or undermine multi-lateral institutions? Stephen Sackur speaks to Jens Stoltenberg, the secretary general of Nato. Has his organisation risen to this massive challenge?

(Photo: Jens Stoltenberg, the secretary general of Nato)