Oil prices fell below $70 a barrel on Friday, June 26, with US crude settling at its lowest level since before the Iran war began, as more tankers moved through the Strait of Hormuz and traders concluded that a renewed exchange of strikes between Washington and Tehran would not choke off supply. West Texas Intermediate futures for August delivery dropped 3.74 percent to settle at $69.23 a barrel — the first close beneath $70 since Feb. 27, the day before the conflict started.

The decline was striking for its timing. It came on the same day US Central Command struck four Iranian targets in retaliation for a drone attack on a commercial ship in the strait, the kind of escalation that would normally send crude sharply higher. Instead prices extended their slide, a signal that the market has reoriented around the physical reality of oil still flowing rather than the geopolitical risk of it being cut off.

WTI crude, front-month futures ($/barrel) Source: Yahoo Finance · daily closes
$69.23 Jun 5 Jun 26

Brent crude, the international benchmark, also fell, trading near its lowest levels since February. Both benchmarks have now given back the entire war-risk premium that had driven WTI above $90 a barrel earlier in June, when Iran's threats to close the Strait of Hormuz — the chokepoint for roughly a fifth of the world's oil — had traders bracing for a supply shock.

The catalyst for the reversal has been the steady resumption of tanker traffic. Since the United States and Iran signed a memorandum of understanding on June 17 to extend their ceasefire for at least 60 days and reopen the strait, daily transits have climbed back toward normal levels. As ships that had hesitated to enter the waterway began moving again, the premium that had been built into prices for the risk of disruption rapidly drained away.

Investors spent the week weighing whether the diplomatic track would hold. Negotiations at the Swiss resort of Bürgenstock — the first since the memorandum was signed — were aimed at turning the ceasefire into a more durable arrangement, including settling the disputed question of which route ships must use through the strait. The market's verdict, expressed in falling prices, has been that the framework is more likely to survive than collapse.

There are still sources of friction that could reverse the move quickly. The US and Iran disagree over whether ships should hug the southern Omani coast or take a northern route under Iranian control, and Tehran has not ruled out collecting tolls once the 60-day window closes. Iran's warning that further US strikes would draw a 'more extensive' response leaves open the possibility of another flare-up that could put the strait back in play.

For now, though, the direction of travel is lower, and that has consequences far beyond commodity markets. Crude near $70 translates into cheaper gasoline and eases the headline inflation readings that central banks watch closely, removing a supply-side shock that had threatened to complicate the path for interest rates in the months ahead.

The question for traders is whether $70 marks a floor or a way station. As long as tankers keep moving and the ceasefire holds, the bias is toward lower prices as the last of the war premium unwinds. But the same strait that has driven crude down would drive it back up just as fast if the truce that reopened it gives way.