Peace talks were stymied by dispute over the border question. Napoleon feared that the French people would not allow him to retain the throne if he lost Belgium. After victory in the 10 February Battle of Champaubert Napoleon sent word to Caulaincourt to "sign nothing". The change in French behaviour at the talks led the Coalition to conclude that no peace was possible. Negotiations were broken off and on 9 March the Treaty of Chaumont was signed which committed the allies to continue the war until France accepted a return to her 1791 borders. Napoleon was afterwards defeated, lost his throne and was replaced by Louis XVIII. The Congress of Châtillon influenced the Congress of Vienna at which the victorious allies decided the future of Europe.