It All Comes Down to Who Controls the Strait of Hormuz: The “Final Battle"

Ray Dalio, founder of Bridgewater Associates, published a LinkedIn essay on March 16, 2026 arguing that the Iran war turns on control of the Strait of Hormuz. He wrote that he has heard from government leaders, geopolitical experts and others that if Iran retains control over who may pass through the Strait, or even retains the power to negotiate over it, the United States will be seen as having lost the war. In Dalio's framing, the test of victory is whether the U.S. can ensure safe passage, and he argues that the reasons for any failure, including domestic politics ahead of the midterm elections, limited public tolerance for casualties and costs, or an inability to build a coalition, would not change the perception of defeat.

Dalio draws historical parallels to the 1956 Suez Crisis for Great Britain and to 17th- and 18th-century defeats for the Spanish and Dutch empires. He argues that challenges to control of critical trade routes tend to shift capital and allegiances toward the perceived winner. He cites a principle from his book Principles for Dealing with the Changing World Order: when a reserve-currency power is financially overextended and loses military and financial control, allies and creditors may lose confidence, the currency may weaken particularly against gold, and the country's debt may be sold. He also points to the cumulative costs of the Vietnam, Afghanistan and Iraq wars as context for U.S. strain. By contrast, he cites Reagan's escorting of tankers during the Iran-Iraq War as an example of power projection that bolstered confidence.

Dalio quotes Trump's recent warnings about mines and threats against Iran and says that if the U.S. cannot deliver on reopening the Strait, its credibility will suffer. He says Iran's strategy is to prolong and intensify the conflict, betting on limited American tolerance for pain. He quotes an Iranian military statement threatening to destroy oil and energy facilities partly owned by U.S. companies or cooperating with the U.S. Dalio says that agreements are unlikely to settle the conflict and that the next phase is likely to be the worst. He also says the Trump administration is seeking other countries to join in escorting ships, though he notes this may be complicated by mines.

Dalio concludes that the effects will extend to China, Russia, North Korea, Cuba, Ukraine, Europe, India and Japan, and that the U.S. cannot fight multiple wars at once. He describes himself as non-political and says the views reflect his historical analysis rather than a forecast with certainty.