The story told by foreign policy types in Donald Trump’s administration has been one of a president “normalised” by the office. From time to time, this narrative takes hold. Briefly. Then Mr Trump blows it up by sacking the director of the Federal Bureau of Investigation or sharing sensitive intelligence with the Russian foreign minister. When the Republican senator Robert Corker frets about a “downward spiral” in the White House he is guilty only of understatement.

Mr Trump is about to set off on his first overseas trip, taking in visits to allies in the Middle East and Europe. This as his presidency is engulfed daily by revelations about the past relationship with Vladimir Putin’s Russia and efforts to deflect investigations into the Kremlin connections. Even before the latest disclosures by the Washington Post and New York Times, the tension in the foreign policy establishment was palpable. The organising goal of US foreign policy has been distilled as the avoidance of fresh calamities.

Russia apart, the president’s advisers have claimed to have done much in persuading Mr Trump to adjust to international realities. Mr Trump used to think Nato was obsolete. Now he does not. A cheerleader for Brexit, he looked forward to the break-up of the EU. Germany’s chancellor Angela Merkel persuaded him the union is here to stay. To prove the point, Mr Trump is planning to visit the headquarters in Brussels of both organisations.