Multilateralism has taken a bit of a hammering in recent years. The rise of nationalism, right-wing populism, and great power rivalries have all corroded the will of nations to come together in multilateral institutions, and together tackle the great challenges of our time. But the COVID pandemic has brought home to us the importance of continuing to invest in cooperative multilateral approaches in dealing with the great international issues of the day. It's also shown us how we all suffer when nations reject this approach, and we've seen that in disturbing instances of what have been dubbed in recent times as "vaccine nationalism".