Until now it would have seemed a comic satire for Norway, Sweden, France and Germany to be sending troops to Greenland, pending a possible US attack. Yet that is the absurd prospect happening this week. Britain even sent a military officer. This has come within weeks of Trump’s leadership putsch in Venezuela, and within days of his threatened military assault on Iran. In the latter he appeared to claim victory, saying Iran had stopped using its armed troops to suppress street protests. It happens that Trump has effectively been doing the same in Minnesota. He has had a hectic fortnight.