Land GrabI found Brett Popplewell’s cover story “Cold War” (June), about how Greenland was preparing for an American invasion, absolutely absorbing. It’s just a matter of time before Trump focuses on us again, after his war crimes in Iran. No, we would become the north’s equivalent of Puerto Rico—an unincorporated territory without the right to vote. We cannot allow Trump or Vladimir Putin to simply roll over the world, stealing and destroying what has been built since the end of the Second World War. The life-extension industry is simply another example of our seemingly limitless human hubris and belief that we can outwit nature.