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Crude edges lower as Russia waiver overshadows Hormuz tanker blast

Crude oil dipped as Trump's Russia sanctions waiver outweighed the market risk from a Hormuz tanker mine strike.

18/10/2026 23:1115 min read

The slight decline in oil prices so far is limited, implying market participants view the waiver on Russian energy as a buffer against supply shocks rather than a major structural shift, especially with the risks in the Strait of Hormuz still present. Diesel markets are critical here. An increase in Russian product exports would mitigate tightness in that sector, which has borne much of the supply strain resulting from refinery attacks. However, confirmation of a mine blast in the Hormuz strait would quickly reintroduce a risk premium on shipping, potentially lifting war-risk insurance and freight rates. A visit by Pakistan's military leadership to Tehran creates a weak possibility of lowering tensions, though traders are apt to remain skeptical without concrete developments. Volatile, news-driven trading is anticipated.

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Earlier:

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Washington's decision to sustain Russian oil supply in order to maintain diplomatic engagement with Moscow is, for the present, sufficient to counterbalance the newest disruption in the Strait of Hormuz.

Summary:

  • Futures opened the week slightly lower for crude oil.
  • Trump's executive order suspended Graham Act sanctions and tariffs on Russian energy, inviting complaints from both parties.
  • On Truth Social, he framed the waiver as a tool to keep Russia engaged in Ukraine negotiations, pointing to advances on hostage talks and Moscow's limited assistance to Tehran.
  • Per Tehran media, the IRGC's naval arm reported a tanker fire and explosion from a mine strike in the southern Hormuz.
  • Pakistan's army chief, Asim Munir, could travel to Tehran this week, according to ISNA.
  • Stock and bond futures ticked up, while the euro fell against pressure from unrest across French cities and other eurozone hubs.

The week's start saw a marginal dip in oil prices, as the effect of President Trump waiving sanctions and tariffs on Russian crude overshadowed news of a weekend tanker blast in the Strait of Hormuz.

Trump's executive order set aside penalties and tariffs on Russian energy under the Graham Act, a step that drew fire from both sides of the US political aisle. The easing, which opens the door to larger Russian fuel flows onto international markets, was the core factor behind the softer crude prices in early Asian trading.

Posting on Truth Social, Trump explained that the waiver was meant to keep Russia at the negotiating table regarding the Ukraine war, claiming meaningful headway was occurring, hostage discussions among them. He suggested implementing the sanctions now would jeopardize that, deferring the action to a later date. He added that Moscow's support for Iran was less than it could be, a situation he wished to preserve. Trump also pointed to Ukrainian strikes on Russian diesel refineries as a factor squeezing global diesel supplies, impacting the US, even as Russia continued exporting heavily discounted diesel. He levelled sharp criticism at Ukrainian President Volodymyr Zelenskyy, accusing him of opposing an end to the conflict.

The energy dimension is the key driver for oil markets. Diesel availability has tightened following assaults on Russian refineries. Loosening export curbs on Russian products would inject supply into a constrained market, concurrent with the US-Iran conflict already upsetting Gulf shipments.

The scale of that disruption was highlighted on Sunday, when Iran's IRGC navy stated that an oil tanker had ignited and exploded upon striking a naval mine in the southern Strait of Hormuz, as relayed by Iranian outlets. Information on the ship's identity or possible casualties was not released right away, and there was no independent confirmation of the report.

A potential avenue for diplomacy appeared when Iran's ISNA news agency reported a possible visit to Tehran by Pakistan's army chief, Asim Munir, in the coming week.

In other markets, equity and bond futures traded slightly higher, while the euro weakened against the backdrop of extensive protests in France and elsewhere in the eurozone.

The immediate outlook for oil depends on whether the Russian waiver results in a tangible rise in fuel shipments, and if the threat to shipping in the Strait of Hormuz intensifies.

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