In 1621, Philip III died and his son succeeded as Philip IV. The militarists now were firmly in charge. The following year, Zúñiga was replaced by Gaspar de Guzmán, Count-Duke of Olivares, an able man who believed that the center of all Spain's woes lay in Holland. After certain initial setbacks, the Bohemians were defeated at White Mountain in 1621, and again at Stadtlohn in 1623. The war with the Netherlands was renewed in 1621 with Spinola taking the fortress of Breda in 1625. The intervention of the Danish king Christian IV in the war worried some (Christian was one of Europe's few monarchs who had no worries over his finances) but the victory of the Imperial general Albert of Wallenstein over the Danes at Dessau Bridge and again at Lutter, both in 1626, eliminated the threat. There was hope in Madrid that the Netherlands might finally be reincorporated into the empire, and after the defeat of Denmark the Protestants in Germany seemed subdued. France was once again involved in her own instabilities (the famous Siege of La Rochelle began in 1627), and Spain's eminence seemed irrefutable. The Count-Duke Olivares stridently affirmed "God is Spanish and fights for our nation these days."