The world watched nervously as tensions in the Middle East reached a boiling point on February 28, 2026. Following a series of US and Israeli airstrikes on Iranian territory, Iran’s Islamic Revolutionary Guard Corps (IRGC) issued a dramatic announcement: the strategic Strait of Hormuz, through which a significant portion of the world’s oil flows, was being blockaded. The move, though not officially confirmed by the Iranian government, sent shockwaves through global energy markets and rattled financial centers from New York to Seoul, raising specters of a return to 1970s-style stagflation and economic turmoil.
According to the European Union’s Middle East naval operation command, Aspides, ships under its watch received urgent VHF radio communications from IRGC forces declaring, “No ship can pass through the Strait of Hormuz.” This message was echoed by both the UK Maritime Trade Operations (UKMTO) and multiple media outlets, including Reuters and The Times of Israel. While the Iranian government stopped short of an official blockade declaration, the IRGC’s actions and warnings were clear enough to prompt immediate concern among shipping companies, oil producers, and governments worldwide.
The Strait of Hormuz is no ordinary waterway. Connecting the Arabian Sea with the Persian Gulf, it serves as the main artery for oil exports from Iran, Saudi Arabia, Iraq, and the United Arab Emirates. Around 20 to 30 percent of global seaborne oil shipments—some 20 million barrels daily—pass through its narrow channel. As reported by Yonhap Infomax and Chosun Ilbo, this makes it one of the most critical chokepoints for the world’s energy supply. Any disruption, even temporary, can have outsized effects on oil prices and economic stability far beyond the region.
The IRGC’s commander, Ebrahim Javari, told Al Mayadeen TV, as reported by TASS, “The Revolutionary Guard has implemented the blockade of the Strait of Hormuz following the invasion of Iran.” Iranian state-affiliated Tasnim news agency doubled down, warning ships that, due to military aggression and Iran’s response, “navigation through the strait is unsafe.” The EU naval mission confirmed receiving these warnings but clarified, according to Reuters, that Iran had not yet made any official, legally binding declaration of closure.
Despite the lack of formal government confirmation, the practical impact was immediate. The United States advised commercial vessels to avoid the Gulf region, and UKMTO received multiple reports from ships in the area about the closure broadcasts. However, UKMTO also pointed out that such VHF communications lack legal force unless enforced under international law, a nuance that did little to calm market jitters.
This is not the first time Iran has threatened to close the Strait of Hormuz. During the 1980s, Tehran issued similar warnings and even laid mines in the area. But as noted by multiple sources, including Yonhap Infomax and Korea’s Dong-A Ilbo, Iran has never before fully carried out such a threat—partly because it would also cripple its own vital oil exports. Yet, as tensions with the US and Israel have escalated, the IRGC’s move this time feels dangerously close to the edge.
Financial markets reacted swiftly. Even before the airstrikes and blockade announcement, international oil prices had risen by around 2.5 percent. After the news broke, prices surged a further 3 percent in after-hours trading, with Brent crude closing at $73 per barrel on February 27, a seven-month high, according to Capital Economics. Global investment banks, including JP Morgan, have warned that a full blockade and escalating conflict could push prices to $120–$130 per barrel—a staggering 70 percent jump from current levels. This would not only squeeze consumers at the pump but also risk tipping the global economy into a new era of inflation and stagnation.
“The blockade of the Strait of Hormuz is the worst supply shock,” said Mohamed El-Erian, chief economic advisor at Allianz, as reported by Financial News. “Central banks were just about to declare victory over inflation, and now this.” The specter of stagflation—a toxic mix of rising prices and slowing growth reminiscent of the 1970s oil shocks—now looms large. Former Federal Reserve Chairman Paul Volcker’s aggressive interest rate hikes to combat stagflation may serve as a blueprint, but the economic pain could be severe.
Market strategists are already bracing for impact. Mark Heffern, Chief Investment Officer at UBS Global Asset Management, warned that oil prices above $100 per barrel could trigger a 5 to 10 percent correction in stock markets. David Kostin, head of US equity strategy at Goldman Sachs, cautioned that higher energy costs would dampen consumer spending and drive up production expenses, hitting sectors like transportation, manufacturing, and technology especially hard. “Rising energy prices will ultimately have a negative impact on the stock market,” Kostin said, according to Financial News.
Technology stocks, particularly those linked to artificial intelligence (AI), could be especially vulnerable. High energy costs mean higher electricity bills for data centers, threatening the already razor-thin margins of tech giants like Microsoft and Google. Wedbush analyst Dan Ives warned, “Soaring oil prices will erode the margins of major AI companies, potentially slowing the AI cycle.” Bank of America strategist Savita Subramanian echoed these concerns, noting that the era of boundless optimism about AI’s future has given way to harsh realities about energy security and profitability.
Safe-haven assets like bonds and gold are likely to see increased demand as investors seek shelter from market volatility. Ed Yardeni, president of Yardeni Research, warned of a possible replay of the 1970s oil shock and suggested that the Federal Reserve might have to raise, rather than cut, interest rates to contain inflation—an outcome that could deal a further blow to equity markets.
Governments are scrambling to assess and mitigate the fallout. South Korea’s Ministry of Trade, Industry and Energy convened an emergency meeting on February 29 to evaluate the potential impact on resource supply and the domestic economy. While officials reported no immediate issues with oil or LNG shipments, they acknowledged that some tankers might need to reroute and that contingency plans are in place, including ample gas reserves exceeding mandatory stockpile levels.
Yet, uncertainty prevails. The duration and enforcement of the blockade remain unclear. As Financial News observed, even the threat of a prolonged disruption is enough to fuel anxiety in financial markets and among policymakers worldwide. If the blockade holds, the ripple effects could be felt in everything from inflation rates and interest policies to consumer confidence and corporate profits.
For now, the world waits—hoping that cooler heads will prevail and that the Strait of Hormuz, the lifeline of global energy, will soon reopen to safe passage. Until then, markets, governments, and ordinary people alike remain on edge, bracing for whatever comes next.