PCE

Thursday brought a dose of reality to the currency market. The pound sterling, which had recently been trying to find footing for a recovery, came under pressure once again. GBP/USD slipped 0.16% to 1.3405. The move itself was modest, but the direction speaks volumes. Sterling is losing what little support it still had and is reverting to a state of near-total dependence on the dollar narrative. Several factors converged at once: geopolitical tensions flared up again, the dollar reclaimed its safe-haven crown, and Britain’s domestic political story—which had provided at least some independent driver for the pound—has largely run out of steam.

The night between Wednesday and Thursday shattered the fragile balance markets had been trying to build around negotiations with Iran. U.S. forces struck a military facility near Bandar Abbas, the strategically important port city in southern Iran located at the entrance to the Strait of Hormuz. This was not just another airstrike. It targeted the heart of Iran’s logistical infrastructure and a location that oversees access to one of the world’s most critical oil arteries.

Iran’s response was swift. The Islamic Revolutionary Guard Corps launched an attack on a U.S. airbase, describing it as a “serious warning.” This was no longer a defensive maneuver or a limited operation that could be framed as deterrence. It marked a direct escalation, with both sides exchanging blows and each new strike raising the stakes. The ceasefire that diplomats had been discussing only recently now appears little more than a fiction.

Donald Trump added to the picture by ruling out sanctions relief or the unfreezing of Iranian assets. That erased the cautious optimism seen on Wednesday and triggered broad-based demand for the dollar. Francesco Pesole of ING captured the mood succinctly: the market...

Thursday’s Asian trading session opened with news that, while increasingly familiar in recent weeks, remains deeply unsettling. U.S. armed forces launched another round of strikes on targets in southern Iran — the second such operation in a week. Markets reacted instantly and predictably: a rush into the dollar. The U.S. dollar index edged higher, Asian currencies fell into negative territory, and oil prices surged. All of this is unfolding on the very day the Federal Reserve is set to release its preferred inflation gauge — the PCE index. Thursday is shaping up to be a volatile one.

Whenever the U.S. strikes Iranian targets, currency markets tend to follow the same script. The dollar rises, while nearly every other currency weakens. This has little to do with patriotism or confidence in American military power. It is simply cold financial logic.

Conflict involving Iran threatens oil supplies. Disruptions in oil supplies drive energy prices higher. Rising energy costs fuel inflation. Higher inflation, in turn, forces the Federal Reserve to keep interest rates elevated — or even raise them further. And high interest rates make the dollar more attractive to investors searching for yield.

But on Thursday, another element was added to this familiar chain reaction. President Trump personally rejected recent reports suggesting Iran was prepared to reopen the Strait of Hormuz within thirty days. That statement dealt a blow to the fragile optimism that had supported markets over the past few days. Investors who only yesterday hoped for a near-term peace agreement are now being forced to admit that the conflict may drag on. And a prolonged conflict means prolonged inflation. Prolonged inflation means rates staying higher for longer.

Markets have largely abandoned hopes for a quick resolution, and safe-haven capital is pouring...