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International oil markets experienced a major surge on Wednesday as benchmark crude prices crossed the $100-per-barrel threshold for the first time since late July. The rapid price jump follows an intense round of retaliatory military actions across the Middle East, including American strikes on Iranian oil vessels, Iranian missile operations against US assets, and renewed attacks by Yemen's Houthi movement on Saudi Arabian energy facilities.
By Wednesday afternoon, Brent crude stood at $100.70 a barrel, marking an increase of 2.83 percent compared to the prior trading session. The milestone reflects mounting market anxiety over persistent combat operations that have disrupted commercial navigation throughout vital maritime corridors in the Gulf region.
The latest price spike adds to a steep upward trajectory seen throughout the year. Prior to the outbreak of direct hostilities involving the United States, Israel, and Iran in February, Brent crude was trading at approximately $70 (£52) a barrel. The sustained conflict has driven up energy costs internationally, placing significant upward pressure on retail fuel prices for consumers worldwide.
A primary driver behind the market volatility is the effective shutdown of the Strait of Hormuz. The strategic chokepoint, which historically accommodates roughly 20 percent of global petroleum and liquefied natural gas shipments, has been virtually closed due to Iranian missile and drone assaults on merchant vessels combined with an ongoing US naval blockade targeting Iranian ports.
The latest escalation gathered pace overnight when the United States carried out precision strikes destroying five oil tankers connected to Iran's Islamic Revolution Guard Corps. According to US Central Command, four of these vessels—identified as the Kaviz, Charminar, Horizon 1, and Riesco—were targeted in the Gulf of Oman, with military video footage showing the Riesco catching fire and subsequently sinking.
A fifth Iranian vessel, the Derya, was struck in the northern waters of the Gulf near Kharg Island. The island represents a critical piece of infrastructure for Tehran, serving as the central terminal through which the vast majority of Iran's crude exports are handled. US military officials stated that American forces issued advance warnings directing crew members to abandon the vessels before launching their attacks.
Centcom confirmed that the action against the tankers was executed in response to repeated hostile maneuvers by Tehran. Iranian forces had fired ballistic missiles at an American warship twice within a 48-hour window. Military officials reported that the US naval vessel successfully avoided the incoming missiles and sustained no damage, with no American casualties incurred.
In response to the destruction of its tankers, the IRGC Aerospace Force mounted a cross-border missile operation against Muwaffaq Salti Air Base in Jordan, aiming at American aircraft, maintenance hangars, and related support infrastructure. Jordan's armed forces reported that their air defense units successfully intercepted 20 incoming Iranian projectiles, while two other missiles fell harmlessly in unpopulated areas without causing casualties.
The IRGC also asserted that its naval branch attacked two US Navy destroyers and eight commercial oil tankers navigating the Strait of Hormuz, claiming to have inflicted substantial damage on the vessels. However, US Central Command firmly rejected these assertions, stating that the claims regarding hits on American warships were entirely false.
Despite the conflicting claims regarding military vessels, commercial traffic in the region faced severe disruptions. The UK Maritime Trade Operations agency indicated that multiple merchant ships in both the northern Gulf and the Gulf of Oman came under disabling fire connected to the regional military confrontations.
Among the specific maritime incidents reported, a vessel anchored roughly 24 nautical miles northwest of Port Rashid in the United Arab Emirates was observed listing heavily with potential water ingress following an impact from an unidentified projectile. Additionally, Iraqi authorities reported dispatching emergency teams to extinguish a blaze aboard the Panama-flagged tanker New Andros, which had been struck by an aerial drone in the Gulf while transporting two million barrels of fuel oil.
Further threatening maritime transit, IRGC spokesman Hossein Mohebi announced during a broadcast on Iranian state television that Tehran intends to demarcate a new "prohibited zone" for commercial navigation. The restricted zone is slated to encompass sections of the Gulf of Oman and extend into the Arabian Sea along routes approaching the Strait of Hormuz.
Mohebi issued a direct warning to international commercial operators, cautioning that any vessel attempting to navigate the designated zone without prior coordination with Iranian authorities would be treated as unauthorized and face punitive measures.
The maritime crisis has been compounded by simultaneous escalations involving Iranian-aligned factions elsewhere in the region. Yemen's Houthis launched drone and missile barrages that ignited fires across multiple Saudi Arabian energy sites, triggering a wave of dozens of retaliatory airstrikes by the Saudi-led coalition in Yemen. These exchanges follow the breakdown of a four-year truce in July, after which Houthi forces resumed targeting Red Sea shipping and Saudi infrastructure.
Addressing the ongoing exchange of strikes, US Secretary of State Marco Rubio described the dynamic as straightforward, reiterating that Washington would consistently respond to Iranian attempts to target American naval personnel and vessels operating throughout the theater.
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