Miklós Bánffy said this quote

“ Great nations, and even medium-sized ones, can always seek revision of frontiers by normal diplomatic means - if the political climate is favourable. No propaganda or previous jockeying for position is necessary, for if the right moment is chosen and there are good reasons for a change, then there is nothing to stop anyone from putting forward proposals for territorial adjustments...It is always possible to keep alive certain issues with propaganda abroad, but the acquisition of territory needs quiet patient work. No doubt it can be a help if the world gets to know about the existence of such a problem, but it is not until the world is convinced of injustice that redress can follow. ”