 During the subsequent period of warfare, members of the Köprülü household occasionally regained the grand vizierate - for instance Fazıl Mustafa Pasha (1689–1691) and Amcazade Hüseyin Pasha (1697–1702), yet they never again achieved as firm a grip on power as they had enjoyed before 1683.In the subsequent conflict, the Ottomans struggled under the strain of multi-front warfare with the Habsburgs, the princes of the Holy Roman Empire, Venice, Poland-Lithuania, and Russia.After a series of defeats culminating in the loss of Hungary, the Ottomans managed to stabilize their position, reconquering Belgrade in 1690.