H e’s down, but not quite out. Barring divine or other intervention, Donald Trump will remain in the Oval Office for a further two years and 10 weeks. Or, as the White House put it in a plaintive social media post brimming with neediness: “PSA [Public Service Announcement]: Trump is still your president.” But that’s not the only reason why the global celebrations that greeted the Democratic tidal wave that swept Republicans out of even their deepest heartlands should be tempered, if only a tad.

Don’t get me wrong, the results of Tuesday’s midterm elections are cause for genuine international jubilation. The defeats of Trump allies in Serbia and Brazil were delicious appetisers, but this was the feast. No mere electoral setback in line with midterm tradition, this was a thorough repudiation of the second Trump presidency and of Trumpism.…