Original sentence: By June 15, 1940 there were no longer any Allied ambassadors residing in Italian territory (the norm for ambassadors to the Vatican): the Polish, French, and British ambassadors entered Vatican City proper; Nieuwenhuys declined Vatican protection and fled to Switzerland with along with the Belgian ambassador to Italy
Edited sentence: By June 15, 1940 there were no longer any Allied ambassadors residing in Italian territory (the norm for ambassadors to the Vatican): the Polish, French, and British ambassadors entered Vatican City proper; Nieuwenhuys initially declined Vatican protection on June 16 to flee to Switzerland with along with the Belgian ambassador to Italy, but decided to stay on June 18