Alberoni now found himself in turn attacked by France. Whilst busying himself to repair a few of the shattered ships which had escaped from the tempest, in order to harass the coast of Brittany in conjunction with the malcontents there, he beheld an army of thirty thousand French menacing the Pyrenean frontier. War having begun, the Spaniards were utterly defeated by the French in Spain and by the Austrians in Sicily, thanks to the zealous co-operation of the British fleet under Admiral Byng. At length Philip was compelled to dismiss Alberoni. The King of Spain hoped, by the dismissal of Alberoni, to obtain more advantageous terms of peace from France and England; but they still stood firmly to the conditions of the Quadruple Alliance. On the 19th of January, 1720, the plenipotentiaries of England, France, and Holland signed an engagement at Paris not to admit of any conditions of peace from Spain contrary to those of the alliance. Stanhope despatched his secretary, Schaub, to Madrid, to endeavour to bring over the queen to this agreement, and Dubois sent instructions to the Marquis Scotti, Father d'Aubenton, and others in the French interest to press the same point. She stood out firmly for some time, but eventually gave way, and the mind of the king was soon influenced by her. Some difficulties which could not be overcome were referred to a congress to be held at Cambray. On the 26th of January Philip announced his accession to the Quadruple Alliance, declaring that he gave up his rights and possessions to secure the peace of Europe. He renewed his renunciation of the French Crown, and promised to evacuate Sicily and Sardinia within six months, which he faithfully performed.