A possible closure of the Strait of Hormuz could trigger a severe global economic shock by cutting off one-fifth of the world's oil [3].
This waterway serves as the primary link between the Persian Gulf and the Gulf of Oman. Because it is a critical chokepoint for energy transit, any blockade would immediately destabilize global markets and threaten the energy security of importing nations.
Geopolitical tensions have escalated following the collapse of a cease-fire and a failed diplomatic deal between the U.S. and Iran. IEA Chief Fatih Birol said the world should be prepared for the worst case scenario [1].
Analysts have provided varying projections on the resulting price spikes. Some reports indicate prices could rise to between $120 and $130 per barrel [2]. Other assessments suggest a failed deal scenario could push prices toward $200 per barrel [3].
Recent market data shows Brent crude was at $87.70 per barrel as traders reassess the risks associated with Hormuz supply [4]. Earlier this year, a U.S.-Iran Memorandum of Understanding left a residual oil premium of five to 10 dollars per barrel [5]. That agreement had projected Hormuz oil flows to reach 10 million barrels per day by January [5].
Risk assessments published May 20, 2026, identified the potential closure of the strait as the greatest threat to energy stability [6]. The narrow nature of the waterway makes it vulnerable to blockade, which would halt the transit of approximately 20% of global oil supplies [3].
U.S. President Donald Trump and other officials have been involved in the diplomatic efforts to manage the crisis. While some officials expressed optimism regarding previous deals, the current collapse of the cease-fire has renewed fears of a total blockade [2, 3].
“"The world should be prepared for the worst case scenario."”
The volatility of oil prices is currently tethered to the diplomatic relationship between the U.S. and Iran. Because 20% of global oil passes through a single narrow chokepoint, the global economy lacks a rapid alternative for that volume of supply. A blockade would not only raise fuel costs but likely trigger systemic inflation across global shipping, and manufacturing sectors.
