Energy prices climb as a proposed blockade heightens supply concerns and market risk.
Dubai: Oil prices rose at the start of the week, while global equities and bonds came under pressure after the US confirmed plans to impose a blockade around Iranian ports, heightening concerns over energy supply and market stability.
Brent crude rose about 7% to just under $102 a barrel, reflecting concerns that tighter controls around the Strait of Hormuz could disrupt flows through one of the world’s most critical energy corridors. The move followed weekend talks that failed to produce a breakthrough, keeping tensions elevated.
Markets reacted swiftly. Asian equities fell, U.S. futures pointed lower, and European markets braced for a weaker opening. The U.S. dollar strengthened against major currencies, extending its role as a preferred safe-haven asset amid the tensions.
Energy fears drive early moves
The proposed blockade is expected to target vessels linked to Iranian trade, with U.S. authorities stating that maritime traffic to and from Iranian ports will be restricted. At the same time, navigation through the wider Strait of Hormuz is expected to remain open for other routes.
Iran has firmly rejected the move, warning that it will not allow any blockade of the Strait of Hormuz to proceed.
From a market perspective, the immediate concern remains supply risk, as the Strait is one of the world’s most critical energy chokepoints. Any disruption—actual or even anticipated—can quickly tighten global oil and gas availability and amplify price volatility.
Recent developments underscore why markets are reacting so sharply: the proposed blockade targeting Iranian-linked shipping has already contributed to a surge in oil prices and heightened fears of a broader energy shock.
At the same time, tensions around the Strait are increasing perceived risk for global shipping, with analysts warning that even partial restrictions can disrupt a significant share of seaborne crude flows passing through the region.
Overall, while Iran’s rejection raises the risk of further escalation, markets are primarily focused on whether the situation leads to physical disruptions in tanker traffic or sustained constraints on exports through the Strait.
Higher oil prices have also revived inflation concerns, pushing bond yields higher and reshaping interest rate expectations. Japan’s 10-year yield climbed to levels last seen in the late 1990s, while U.S. Treasuries fell.
Markets hold some optimism
Despite the escalation, market movements remain relatively measured compared with previous shocks, suggesting investors are not yet pricing in a prolonged disruption.
Recent weeks had seen equities recover strongly and oil prices ease on expectations that negotiations could stabilise the situation. The latest developments have partially reversed that trend, although overall sentiment has not fully deteriorated.
Norbert Rücker, Head of Economics and Next Generation Research at Julius Baer, said the conflict has entered a more uncertain phase.
“With the negotiations stuck if not abandoned and the ceasefire at risk, the high noon phase of the Iran war seems to be going into extension.”
He noted that markets are still watching for clear signs of deeper disruption.
“Serious infrastructure damage, not curtailed trade, is needed for the conflict to lastingly unsettle the global economy, which has not yet happened.”
Supply disruption remains contained
Energy markets have so far avoided the kind of disruption that would trigger a sustained shock, with infrastructure largely intact and alternative supply routes helping to ease pressure.
Production and exports have been affected, but not enough to materially change global supply conditions. Storage levels onshore have also held up better than expected in most regions.
Rücker highlighted the resilience of global supply chains and their ability to adapt.
“Among the crisis’ various surprises are the successful defence of infrastructure amid the attacks, and the swiftness and scale of the ramp-up of alternative energy export routes.”
This adjustment has given markets time to rebalance, even as shipping patterns in the region continue to evolve.
Blockade changes the dynamics
The U.S. move introduces a new dimension to the conflict, aiming to redirect shipping flows and limit Iranian influence over key transit routes.
“With its announced blockade, the United States aims to shift Strait of Hormuz trade away from Iranian territorial waters into Omani waters in order to re-establish freedom of navigation,” Rücker said.
He noted that the change is likely to influence shipping behaviour in the near term, with some operators expected to reduce exposure until greater clarity emerges.
“The coming days are likely to bring an intensification of supply disruption after weeks of easing,” he added.
At the same time, he described the blockade as part of a broader negotiating phase, where developments on the ground remain closely linked to diplomatic positioning.
