 The only way to bring the pandemic to a close and improve all of our lives is to make the vaccines available to everybody. So I would rather vaccinate some people in every country than all people in some countries. Vaccinating a lot of people in a small number of countries will not bring the pandemic to a close and in fact it will encourage the development of new variants that may escape those very vaccines. Governments, they're in very difficult positions but what I would say to them is that it is in their interests that we drive down transmission everywhere. If we don't, we will see new variants and we then go back into this awful pandemic of 2020. I think that is the message to policymakers and politicians the world over. Leadership really matters. That's what leadership needs to come out and say, make the case for it and then make it happen. And then I believe those leaders would be on the right side of history.