The British and American governments worried about the return of the king. Charles W. Sawyer, US Ambassador to Belgium, warned his government that an immediate return by the king to Belgium would "precipitate serious difficulties". "There are deep differences even in the royal family and the situation holds dynamite for Belgium and perhaps for Europe". "The Foreign Office feared that an increasing minority in French-speaking Wallonia would demand either autonomy or annexation to France. Winant, the American Ambassador to the Court of Saint James's, reported a Foreign Office official's concern regarding irredentist propaganda in Wallonia." and that "the French Ambassador in Brussels... is believed to have connived in the spreading of this propaganda".