Baltazar de Zúñiga

Baltazar de Zúñiga (born 1561, Monterrey, Spain—died Oct. 7, 1622, Madrid) was a Spanish diplomat and statesman who led his country into the Thirty Years’ War and renewed the war against the Dutch Republic (see Eighty Years’ War), creating strains that eventually produced the decline of Spain as a great power.

Zúñiga, the second son of the count of Monterrey, studied at Salamanca University and, in 1586, raised an infantry company for service on the Spanish Armada (1588). He carried the first news of the Armada’s failure to Philip II. Zúñiga later learned the arts of diplomacy while serving in the entourage of his brother-in-law, the second count of Olivares, who was the Spanish ambassador in Rome. In 1599 Zúñiga received his first posting: ambassador of Philip III to the Spanish Netherlands. Zúñiga moved to the Spanish embassy in Paris in 1607.

In 1608 Zúñiga became Spanish ambassador to the imperial court in Vienna, where he witnessed the rising tension between Protestants and Roman Catholics in Germany and between the house of Habsburg and its subjects in Bohemia. In 1617, although Philip III had intended to move him to the embassy in Rome, Zúñiga argued successfully that his expertise on the affairs of central Europe made him more valuable in Madrid. He immediately entered the council of state and two years later became tutor to the heir to the throne, whose household was already dominated by the third count of Olivares. After the outbreak of a revolt in Bohemia, Zúñiga persuaded Philip III to help his Habsburg relatives to restore order. In 1620 one Spanish army took part in the invasion of Bohemia, while another occupied the German lands of Frederick V, elector Palatine of the Rhine and king of Bohemia.

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Following the death of Philip III in March 1621, Zúñiga consolidated his power and became chief minister to 16-year-old Philip IV. Zúñiga immediately decided not to renew the Twelve Years’ Truce with the Dutch Republic when it expired the following month; but he did so with a heavy heart. “To those who put all blame for our troubles on to the truce, and foresee great benefits from breaking it,” Zúñiga wrote,

we can say for certain that whether we end it or not, we shall always be at a disadvantage. Affairs can get to a certain stage where every decision taken is for the worst—not through lack of good advice but because the situation is so desperate that no remedy can conceivably be found.

So it proved: the war in the Netherlands lasted until 1648, and Spain lost territory to the Dutch throughout. Spain’s assistance to the Habsburgs proved similarly counterproductive: it alarmed the German Protestants and their allies, thus helping to turn the revolt of Bohemia into a European civil war that also lasted until 1648. By then, Spain lacked the resources to rank as a great power.