Boris Johnson and Liz Truss are heading to New York for the UN General Assembly, and then for meetings with President Biden in Washington, in the wake of the recent AUKUS security pact. They are trying to get some urgency behind the climate change summit in Glasgow in November, where the usually ebullient Johnson has already begun sounding a note of caution – telling reporters on his plane that he thought he had “a six out of ten chance” of succeeding in the goals he had set for the gathering.

He hasn’t even gone as far as making such an assessment of the outcome of his talks with Team Biden. There has been some vague talk from the commentators that this will be about restoring relations after the Trump era, and clearing the air after the inter-alliance mistrust over Afghanistan.