Hormuz Straits Blockade: Oil Supply Chains Disrupted as Brent Jumps 4%
With Iran threatening to block all oil and gas exports from the Gulf and tanker attacks mounting, global supply chains face a critical chokepoint crisis, driving Brent crude up 4% to its highest in over a month.
Key Takeaways
- With Iran threatening to block all oil and gas exports from the Gulf and tanker attacks mounting, global supply chains face a critical chokepoint crisis, driving Brent crude up 4% to its highest in over a month.
Mentioned
Key Intelligence
Key Facts
- 1US launches seventh straight night of strikes on Iran, for the first time targeting military logistics infrastructure including bridges.
- 2Iran retaliates by striking a power and desalination plant in Kuwait, and claims hits on US military bases at Camp Arifjan, Ali Al Salem Air Base in Kuwait, and Sheikh Isa Air Base in Bahrain.
- 3The Iranian Revolutionary Guards warn that no oil or gas will leave the Gulf until US aggression ends, and claim to have intercepted four vessels via a combined missile and drone operation.
- 4Benchmark Brent crude oil prices jump 4% to the highest level in over a month, on track for a third weekly gain.
- 5Armed men seize a vessel off Yemen, raising concerns over the security of the Bab el-Mandeb Strait, the other major oil chokepoint.
- 6The United Nations expresses concern over attacks on civilian infrastructure, while the US labels Iranian reports of two tanker explosions as false.
Three-week rally amid Hormuz crisis
Who's Affected
Analysis
For logistics and procurement professionals, the Strait of Hormuz crisis is a stark reminder of the fragility of just-in-time energy supply chains. Disruption to the 20% of global oil transiting the strait directly impacts shipping routes, insurance premiums, and manufacturing costs across continents, compelling businesses to reassess contingency plans and inventory buffers.
The US-Iran conflict has entered a dangerous new phase, with both sides escalating from military targets to civilian infrastructure and the critical Strait of Hormuz now a contested chokepoint. On July 17, the United States launched its seventh consecutive night of strikes against Iran, this time expanding its target list to include military logistics infrastructure, notably bridges. Iran responded by hitting a power and desalination plant in Kuwait, a move that not only struck a US ally but also directly threatened civilian water supplies. The Revolutionary Guards further claimed strikes on Camp Arifjan and Ali Al Salem Air Base in Kuwait, and Sheikh Isa Air Base in Bahrain, warning Gulf states to expect more such attacks. This mutual targeting of infrastructure marks a significant erosion of the already fragile norms that had limited the conflict to military sites, raising the specter of a broader regional war.
The Revolutionary Guards further claimed strikes on Camp Arifjan and Ali Al Salem Air Base in Kuwait, and Sheikh Isa Air Base in Bahrain, warning Gulf states to expect more such attacks.
At sea, the situation is equally perilous. The Strait of Hormuz, through which approximately one-fifth of the world's oil supply transits, has become a no-go zone in practice. US Marines boarded a tanker near the strait, while the Revolutionary Guards claimed to have stopped four vessels via a combined missile and drone operation. Tasnim news reported a Thai-flagged ship was 'targeted.' Iran's state television quoted the Guards as vowing that until US 'aggression' ends, not a 'single drop of oil and gas' would be exported from the region. Although the US military labelled as false Iranian reports that two tankers had exploded from mines, the threat environment is so severe that shipping has effectively halted. Compounding the crisis, armed men seized a vessel off Yemen, highlighting the vulnerability of the Bab el-Mandeb Strait, the other critical chokepoint for oil shipments from the Red Sea. This dual-threat to maritime transit raises the real possibility of a simultaneous closure of both major energy arteries, an unprecedented event in modern times.
What to Watch
The economic ramifications are already being felt. Benchmark Brent crude oil prices surged 4% on Friday to their highest level in more than a month, on track for a third consecutive weekly gain. The price spike is not merely a knee-jerk reaction; it reflects growing market conviction that the conflict will disrupt supplies for an extended period. For US President Donald Trump, the timing is politically toxic. With November congressional elections approaching, rising energy prices threaten to undermine his administration's economic narrative. Trump has openly threatened broad-based air strikes on Iran's infrastructure and has not ruled out a ground assault on its coast or islands, a posture that risks further destabilisation. Meanwhile, the UN Secretary-General expressed deep concern over 'attacks on civilian infrastructure,' underscoring the international legal implications of strikes on desalination and power facilities.
The collapse of a ceasefire on July 7 set this escalation in motion. In a week, both sides have moved from limited, tit-for-tat strikes to a systematic assault on economic and logistics targets. The US is clearly trying to degrade Iran's ability to sustain its military operations while preserving options for a more decisive blow. Iran, in turn, is leveraging its asymmetric capabilities—drones, mines, and proxies—to exact a disproportionate toll on US allies and global energy markets. This strategy not only tests the cohesion of the Gulf Cooperation Council but also forces the US to weigh the costs of defending vulnerable partners like Kuwait and Bahrain. The situation is exceptionally fluid, and the risk of miscalculation is immense. As infrastructure becomes a deliberate target, the conflict threatens to spiral beyond the control of either party, with global supply chains and geopolitical stability hanging in the balance.
Timeline
Timeline
US-Iran Ceasefire Collapses
A fragile ceasefire agreement falls apart, prompting both sides to resume hostilities.
US Begins Nightly Strikes
The United States launches the first in a series of nightly attacks on Iranian military targets, initially focusing on weapons facilities.
Infrastructure Targeting and Maritime Escalation
US strikes expand to bridges and military logistics infrastructure. Iran retaliates by hitting a power and desalination plant in Kuwait, targeting US bases, and interdicting vessels in the Strait of Hormuz. US Marines board a tanker. Brent crude surges 4%.
Kuwait Airport Suspended, IRGC Claims Base Hits
Kuwait International Airport suspends operations due to repeated missile and drone threats. Iran's Revolutionary Guards claim to have struck Camp Arifjan, destroyed a radar at Ali Al Salem, and hit Sheikh Isa Air Base in Bahrain.
Cite This Page
"Hormuz Straits Blockade: Oil Supply Chains Disrupted as Brent Jumps 4%." Supply Chain Intelligence Brief, July 18, 2026. https://getsupplybrief.com/story/hormuz-blockade-supply-chain
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|---|---|
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