Three days earlier, on February 17, Admiral Roussin, the newly appointed French ambassador to the Sublime Porte, arrived at Constantinople. Upon the appearance of the Russian fleet he at once instructed his _dragoman_ to warn the Porte that, unless the admiral in command were requested to depart within twenty-four hours, he should consider his mission at an end. At the same time he tried to induce the British minister to make a similar representation. Mandeville, however, could only reply that he had no authority "to hold language of so high and energetic a character." Roussin appears to have seen very soon that he had acted with undue precipitation, and that his own withdrawal would not hasten by an hour the departure of the Russian ships. But his next step was scarcely more judicious. On the 21st, he affixed his signature to a document guaranteeing that Mehemet Ali would make peace with the Sultan, upon the terms proposed by Halil Pasha and which had already been rejected. In return the Sublime Porte was to undertake to refuse "foreign succour" of any kind in the future.[298] It was hoped to satisfy Mehemet Ali by conferring upon him the government of the districts of Acre, Naplous, Jerusalem and Tripoli. He, however, was resolved to extend his rule over the whole of Syria, and to acquire, in addition, the pashalic of Adana and the seaports of Selefkeh and Alaia. Adana possessed an especial value in his eyes, by reason of its forests from which he proposed to obtain the timber necessary for the building of his ships. He understood the difficulties of the Sultan's position and he was well informed about the rivalries of the Powers.[299] He perceived clearly that he was never likely again to have so favourable an opportunity for pressing his demands upon the Porte. On March 23, accordingly, Reshid Bey arrived at Constantinople bringing a letter in which Mehemet Ali rejected scornfully Admiral Roussin's proposals. He would rather, he declared, meet with an honourable death than submit to be deprived of territories which were his by right of conquest. At the same time, Ibrahim was directed to march on Constantinople if, within five days of Reshid's arrival, the Sultan should not have agreed to the required concessions.[300]