Key Takeaways:
The British pound edged higher against the US dollar on May 28, paring some of its recent losses, though the recovery faces headwinds from escalating Iran tensions that have driven safe-haven demand for the greenback.
The last time US-Iran tensions escalated to a comparable level, in early 2024, the dollar index gained 2.3% over four weeks while GBP/USD fell more than 3%, according to Bloomberg-compiled data. The current episode has triggered a similar rotation into the dollar, with the pound among the hardest-hit major currencies.
The pound's bounce on Thursday reflects short-term position-squaring rather than a fundamental shift in outlook, traders said. The currency remains under pressure from three distinct Iran-related risk channels: the direct geopolitical risk premium embedded in GBP/USD options pricing, the indirect drag from higher energy costs that could worsen the UK's terms of trade, and the broader risk-off sentiment that benefits the dollar across the board.
The stakes for sterling are unusually high because the UK imports roughly half its natural gas, making it more exposed than most developed economies to any Iran-related disruption in Middle East energy supplies. Brent crude has already priced in a supply risk premium, and further escalation would feed directly into UK import costs, complicating the Bank of England's inflation outlook.
Iran Tensions Reshape Currency Market Dynamics
The dollar's safe-haven appeal has strengthened as the US-Iran confrontation has intensified, with the greenback gaining against the pound, euro and emerging-market currencies. The pattern mirrors previous geopolitical shocks: the dollar typically strengthens in the initial phase of a crisis as investors repatriate capital, then gives back gains once the situation stabilizes.
For the pound, the timing compounds existing vulnerabilities. Sterling was already trading near multi-month lows before the latest Iran escalation, weighed down by expectations that the Bank of England will cut rates sooner than the Federal Reserve. The additional geopolitical risk premium has pushed GBP/USD further into oversold territory, according to relative strength index readings.
What a Resolution or Escalation Would Mean
The pound's trajectory depends on which of two scenarios plays out. If Iran tensions de-escalate, the geopolitical risk premium would unwind quickly, potentially triggering a sharp GBP/USD rebound as short positions are covered. In that case, the focus would return to the rate differential, where the BoE's expected easing cycle could still cap sterling gains.
If tensions escalate further, the pound faces additional downside. Options markets are already pricing elevated implied volatility for GBP/USD, reflecting the wide range of possible outcomes. A sustained crisis that disrupts energy flows through the Strait of Hormuz — which handles about 21% of global oil trade — would hit the UK disproportionately hard given its energy import dependence, potentially pushing GBP/USD to levels not seen since the 2022 mini-budget crisis.
This article is for informational purposes only and does not constitute investment advice.
