Although very anxious to see peace restored, the British government wished to escape from the necessity of landing a military force in Portugal. It hoped to attain the desired result by concerting measures with Spain for the expulsion of both Pretenders. Seeing that Don Carlos was levying war from Portuguese territory against the government of the Queen Regent, the right of Spain to intervene was beyond question. In January, 1834, Cea Bermúdez had been succeeded by Martinez de la Rosa. The new minister entered readily into the plans of the British government and agreed to despatch an ambassador to London, provided with full powers to conclude a convention. Strict secrecy was observed about the negotiations, and it was only, on April 13, 1834, when all the details had been settled, that Palmerston showed Talleyrand a draft of the proposed treaty. Spain was to send an army against Dom Miguel, whilst England was to furnish Dom Pedro with naval assistance. It was not intended to invite France to be a party to this agreement; she would merely be asked to adhere to it.[336] Talleyrand's account of this transaction was sent to Admiral de Rigny, not to the Duc de Broglie. The refusal of the Chamber to ratify his proposals for settling a long-standing dispute with the United States, respecting the indemnity to be paid for the seizure of certain ships between the years 1806 and 1812, had driven the Duke to resign. The conditions of the projected treaty caused the greatest irritation in Paris. "The effect would be disastrous," wrote Rigny, "were it to appear that France had entered into the agreement under the protection of England."[337] Talleyrand was, accordingly, directed to insist that France should be made a party to the treaty. After a lengthy and, at times, a heated discussion, Palmerston gave way and, on April 22, 1834, the instrument, known as the Quadruple Treaty, was signed by the representatives of Great Britain, France, Spain and Portugal. An article had been inserted into it stipulating that, "should the co-operation of France be deemed necessary by the High Contracting Parties the King of the French would engage to do, in this respect, whatever might be settled by common consent between himself and his august allies."