Brent Crude Slips Below $91 as Iran Reverses Hormuz Opening Amid US Blockade

**TL;DR** Brent crude fell below $91 per barrel as Iran reversed its decision to open the Strait of Hormuz, citing an ongoing US blockade of its ports. This marked the first time prices dropped to this level since early March.

**Context** Global oil markets experienced significant volatility this week, reacting to developments surrounding a key Middle Eastern shipping lane. Brent crude, the international benchmark for oil prices, saw a substantial decline. It dropped over 9% to $90.38 per barrel, falling below the $91 threshold for the first time since March 10. The Strait of Hormuz, a narrow waterway situated between Iran, the United Arab Emirates, and Oman, is central to these shifts. Approximately one-fifth of the world’s oil supply transits this strait daily, making its status critical for global energy security.

**Key Facts** The volatility began with Iran's initial announcement that the Strait of Hormuz was completely open for the duration of the Israel-Lebanon ceasefire. This declaration offered a temporary relief to markets concerned about constrained supply. Following this, observed ship tracking data showed a notable uptick in vessel movements. Maritime intelligence analyst Michelle Wiese Bockmann confirmed this increased activity, describing traffic through the strait as the busiest she had witnessed since the conflict began.

However, this period of openness proved short-lived. Iran quickly reversed its decision, stating it would continue to block transit through the waterway. This reversal came after US officials reiterated that their blockade of Iranian ports would remain in full force until a comprehensive deal with Tehran was reached, including on its nuclear program.

**What It Means** The fluctuating accessibility of the Strait of Hormuz creates significant uncertainty in global energy markets. Continued restrictions on this vital maritime passage could further tighten an already constrained oil supply, potentially leading to upward pressure on prices. This situation underscores the direct impact of geopolitical tensions on international commodity values. Market participants and governments will closely monitor diplomatic efforts between the US and Iran and any further statements regarding the strait’s operational status. The upcoming end of the Israel-Lebanon ceasefire also bears watching for its potential influence on regional stability.