How a Maritime Empire and a Land Power Battled for the Persian Gulf
From 1507 to 1728, the Portuguese Empire and Safavid Iran engaged in a protracted struggle for control over vital trade routes. This conflict, which saw shifting alliances with the English and Ottoman forces, fundamentally reshaped the geopolitics of the Persian Gulf and the strategic landscape of the Indian Ocean.
The Portuguese involvement in the region began with the strategic vision of Manuel I, who sought to dominate Indian Ocean trade by seizing key chokepoints. In 1507, Afonso de Albuquerque landed at Hormuz, marking the start of a long, often tenuous occupation. Portugal's strategy relied on vassalage, using the Kingdom of Hormuz to project power, including the 1521 invasion of Bahrain to end Jabrid rule. However, this colonial structure was fragile; the Sunni Hormuzi governors faced significant resistance from the local Shia population, leading to instability and eventual rebellion.
The rise of Shah Abbas I transformed the conflict. By the early 17th century, the Safavids began a systematic campaign to reclaim lost territories. In 1602, the governor of Fars, Allahverdi Khan, captured Bahrain, and by 1622, with critical naval support from the English, Abbas I successfully retook Hormuz. This defeat forced the Portuguese to shift their focus toward Basra, where they acted as military protectors. In 1624, a Portuguese fleet under D. Diogo da Silveira utilized superior naval artillery to decimate a large Safavid army, effectively securing the region for their trade interests and establishing a complex, pragmatic alliance with local Ottoman-aligned forces.
The wars were not merely a binary struggle but a series of maneuvers involving shifting regional loyalties. The Portuguese maintained a presence in Basra as traders and protectors until the mid-17th century, benefiting from customs revenue and toll exemptions. The conflict gradually waned as the Portuguese influence in the Gulf diminished, punctuated by a final, isolated military action in 1728 when a Portuguese flotilla sacked Qeshm. This long-standing rivalry highlights the intersection of global trade ambitions and the territorial consolidation of the Safavid Empire.
Source: Portuguese–Safavid wars
