It is increasingly obvious that other countries feel the same. There is already a host of initiatives starting around the world with this aim in mind. My Institute for Global Change is involved in many of them, including the CommonPass initiative from the World Economic Forum. Individual countries such as Greece, which is conscious of the huge impact of Covid on its tourist industry, are calling for global agreement on the issue. The African Union has started its own preparations. The airline and tourism industries are among those most anxious for such a passport. Tourism accounts for roughly ten per...