From the choreography of gestures to national color schemes in outfits, international relations have been governed by style and decorum protocols which let the public know the state of the union(s). 

Then came the “I don’t care” jacket and walking in front of the Queen. Given severity of the blunders, the New York Times formally announced “the death of fashion diplomacy” in 2019. Luckily, it was a premature eulogy. 

https://www.forbes.com/sites/stephanrabimov/2022/04/18/kornit-fashion-week-elevates-israels-cultural-diplomacy/?sh=725094ef4bbd