But though grounds of quarrel multiplied every day, the French minister, Richelieu, had no mind for strife. He was now master of the Catholic faction which had fed the dispute between the Crown and the Huguenots with the aim of bringing about a reconciliation with Spain; he saw that in the European conflict which lay before him the friendship or the neutrality of England was all but essential; and though he gathered a fleet in the Channel and took a high tone of remonstrance, he strove by concession after concession to avert war. But on war Buckingham was resolved. Of policy in any true sense of the word the favourite knew nothing; for the real interest of England or the balance of Europe he cared little; what he saw before him was the chance of a blow at a power he had come to hate, and the chance of a war which would make him popular at home. The mediation of Charles in favour of Rochelle had convinced Richelieu that the complete reduction of that city was a necessary prelude to any effective intervention in Germany. If Lewis was to be master abroad, he must first be master at home. But it was hard for lookers-on to read the Cardinal's mind or to guess with what a purpose he resolved to exact submission from the Huguenots. In England, where the danger of Rochelle seemed a fresh part of the Catholic attack upon Protestantism throughout the world, the enthusiasm for the Huguenots was intense; and Buckingham resolved to take advantage of this enthusiasm to secure such a triumph for the royal arms as should silence all opposition at home. It was for this purpose that the forced loan was pushed on; and in July 1627 a fleet of a hundred vessels sailed under Buckingham's command for the relief of Rochelle. But imposing as was his force, Buckingham showed himself as incapable a soldier as he had proved a statesman. The troops were landed on the Isle of Rhe, in front of the harbour; but after a useless siege of the Castle of St. Martin, the English soldiers were forced in October to fall back along a narrow causeway to their ships, and two thousand fell in the retreat without the loss of a single man to their enemies. [Sidenote: The Parliament of 1628.]