The League of Augsburg had little military power – the Empire and its Allies in the form of the Holy League were still busy fighting the Ottoman Turks in Hungary. Many of the petty princes were reluctant to act due to the fear of French retaliation. Nevertheless, Louis XIV watched with apprehension Leopold I's advances against the Ottomans. Habsburg victories along the Danube at Buda in September 1686, and Mohács a year later had convinced the French that the Emperor, in alliance with Spain and William of Orange, would soon turn his attention towards France and retake what had recently been won by Louis's military intimidation. In response, Louis XIV sought to guarantee his territorial gains of the Reunions by forcing his German neighbours into converting the Truce of Ratisbon into a permanent settlement. However, a French ultimatum issued in 1687 failed to gain the desired assurances from the Emperor whose victories in the east made the Germans less anxious to compromise in the west.