Oodles of diplomatic energy have been expended on the unlikely relationship between the former human rights lawyer, Sir Keir Starmer and the former real estate magnate turned reality TV star, Donald Trump.
It was a political double act that long appeared unlikely and, for a while at least, appeared much stronger than many would have anticipated.
It doesn’t look quite so strong any more, after President Trump belittled and mocked the Prime Minister publicly, comparing him, deeply unfavourably, with the UK’s most celebrated wartime leader, Winston Churchill.
But hang on a second. It is worth seeing all this with some historical context.
It was Churchill, after all, who first talked 80 years ago this week of the so-called “special relationship” between the UK and America.
America currently has a president whose language and outlook can change in minutes, so it is worth thinking of this outburst in the context of an international dynamic with decades of contemporary history.
The relationship ebbs and flows depending on the personalities and politics of those in Downing Street and the White House.
Folk I’ve spoken to in the security services say in their world, it really is a special relationship – the connections are deep, with staff embedded in each other’s countries and institutions.
But in the political world, it does wax and wane.