It may need to be the EU. I know the EU isn’t a nation, but as a block perhaps Europe has the power and influence to lead the effort. Maybe a new entity needs to be established, a global union of nations. Or maybe a union of continents. Maybe each continent should establish its own union of nations (I think every continent already has some kind of union of one type or another) and then have a global union of continents. I don’t necessarily know the best course of action, all I know is the US cannot lead.