The Traffic Data Disagrees With the Official Line
The United States maintains the Strait of Hormuz is open. President Trump posted this week that the naval blockade of Iranian shipping remains in force and that all water mines have been removed or detonated. The vessels that actually have to make the transit are behaving as though the opposite were closer to true. According to maritime trackers MarineTraffic and Kpler, daily crossings fell from a high of 19 on August 11 to just three on August 16, a 19.5 percent decline over the week. Of the week's 95 total transits, 51 used the shipping corridor Iran has designated as approved and 44 used other routes, a split that itself signals how little confidence shippers place in any single authority's claim to control the waterway.
Two attacks on August 11 killed six seafarers and injured ten more, according to Kpler, the kind of incident that explains a pullback in traffic far more directly than any statement from Washington or Tehran does. Kpler's own assessment was blunt: security conditions remain volatile even where traffic volumes have proven resilient in the past.
The Mediator Is Now Part of the Risk
What makes this week different from earlier phases of the crisis is who is being threatened. On August 17, President Trump said the United States would, in his words, bomb Oman if it gets in the way of a deal over the strait. Oman is the neutral party that has spent months negotiating a shipping arrangement directly with Iran, reportedly close to an agreement as of this week. Threatening the mediator rather than the belligerent introduces a specific new failure mode: a near complete deal collapsing not because the two warring parties could not agree, but because the country trying to broker peace between them decides the risk of continuing is no longer worth it.
Senator Tim Kaine has said he will introduce a resolution barring military action against Oman when the Senate returns from recess, a signal that the threat is being taken seriously enough in Washington to prompt a legislative response, whatever its odds of passing.
The daily crossing count is the cleanest read on how seriously the people actually moving cargo are taking all of this.
Of the week's 95 total Hormuz crossings, 51 used the shipping route Iran has designated as approved and 44 used other routes. Source: MarineTraffic, Kpler.
The Base Case and the Tail Risk for Canadian Portfolios
The base case remains that Gulf producers continue routing meaningful volumes through alternative paths and discreet shipments, the pattern that has kept Brent and WTI elevated but not spiking to the extremes seen earlier in the war. WTI has traded in roughly a $74 to $88 range over the past month, grinding higher rather than gapping. That base case is consistent with continued strength in Canadian energy names and a Bank of Canada that, as covered elsewhere in today's edition, is still treating the inflation pass through as an energy story rather than a broad one.
The tail risk is that Oman concludes the mediator's role is no longer survivable, the near complete deal lapses, and the 19.5 percent decline in weekly crossings becomes the leading edge of a sharper drop rather than a plateau. That scenario would move oil and the Canadian dollar considerably faster than the gradual repricing markets have absorbed so far, and it would do so on a trigger, an attack on the mediator rather than the belligerents, that most portfolio positioning has not been built around.