On Sicily he would not bate one jot of his pretensions.

The negotiations were therefore broken off on October 6th, twelve days after Napoleon left Paris to marshal his troops against Prussia.[90] The whole affair revealed Napoleon's determination to trick the allies into signing separate and disadvantageous treaties, and thus to regain by craft the ground which he had lost in fair fight at Maida.
If Sicily was the rock of stumbling between us and Napoleon, Hanover was the chief cause of the war between France and Prussia.

During the negotiations at Paris, Lord Yarmouth privately informed Lucchesini, the Prussian ambassador, that Talleyrand made no difficulty about the restitution of Hanover to George III.

The news, when forwarded to Berlin at the close of July, caused a nervous flutter in ministerial circles, where every effort was being made to keep on good terms with France.
Even before this news arrived, the task was far from easy.

Murat, when occupying his new Duchy of Berg, pushed on his troops into the old Church lands of Essen and Werden.