This would form the essential legal basis of de Gaulle's government in exile, that the armistice soon to be signed with the Nazis was not merely dishonourable but illegal, and that in signing it, the French government would itself be committing treason. On the other hand, if Vichy was the legal French government as some such as Julian T. Jackson have argued, de Gaulle and his followers were revolutionaries, unlike the Dutch, Belgian, and other governments in exile in London. A third option might be that neither considered that a fully free, legitimate, sovereign, and independent successor state to the Third Republic existed following the Armistice, as both Free France and Vichy France refrained from making that implicit claim by studiously avoiding using the word "republic" when referring to themselves, even though republicanism had been a core ideological value and central tenet of the French state ever since the French Revolution—and especially since the Franco-Prussian War. In Vichy's case those reasons were compounded with ideas of a about stamping out France's republican heritage.