After the defeat of the Turks at Lepanto, in 1571, the Ottoman power in Europe slowly declined. But under the Sultan Mahomet IV the old Moslem ambition for European conquest reawoke, as if for a final effort. And such it proved to be. By the disaster before Vienna, in which John Sobieski, King of Poland, once more saved Europe from their incursions, the Turks were driven back within their own confines, where they have since, for the most part, remained, making many wars, but no successful inroads, upon European powers. In 1682 the Hungarian magnates, who were resisting the oppression and persecution of their people by the Austrian Government, called upon the Turks for assistance. Listening to the proposals of Tekeli, the Hungarian leader, who had secured the aid of Louis XIV of France, Mahomet IV decided to break the truce he had made with Austria in 1665. In vain the Emperor Leopold I sent an embassy to Constantinople to dissuade the Sultan from his purpose. Early in the spring of 1683 Sultan Mahomet marched forth from his capital with a large army, which at Belgrad he transferred to the command of the Grand Vizier Kara Mustapha. Tekeli formed a junction with the Turks at Essek. In vain did Ibrahim, the experienced Pacha of Buda, endeavor to persuade Kara Mustapha first of all to subdue the surrounding country, and to postpone until the following year the attack upon Vienna; his advice was scornfully rejected, and, indeed, the audacity of the Grand Vizier seemed justified by the scant resistance he had met with. He talked of renewing the conquests of Solyman: he assembled, it is said, seven hundred thousand men, one hundred thousand horses, and one thousand two hundred guns--an army more powerful than any the Turks had set on foot since the capture of Constantinople. All of which may be reduced to one hundred fifty thousand barbarian troops without discipline, the last conquering army which the degenerate race of the Osmanlis produced wherewith to invade Hungary.