I think that Dementia Joe was also the only non-royal head of state to have a spouse with him.
Of course, the others don’t need a wife-nurse to lead them by the hand and give whispered prompts continuously.
...er..no. A lot of them had their spouses with them.
....this drooling PoS of a President arrived late, so he and his nurse, Jill-Jill, had to stand while folks better than they went ahead; then she wore a fascinator or somesuch, when the wearing of a damned hat was virtually mandatory (her handlers should have known this, but.....); and then Biden had the absolute gall to tell the crowd “Thank you for your time...” as he left, then he and his crowd flew off without even mingling with the other (genuine....) heads of state who were there...no wonder he rest of the world sees us as a bunch of rubes, unsophisticated, egotistical and crude...