Diplomatic hopes over US-Iran deal fade as midterms approach

The week opened with a burst of optimism over a possible US-Iran deal. Oil prices tumbled on Monday as diplomatic hopes grew. By the end of the week, the outlook had reverted to the familiar deadlock.

Headlines are echoing the same pattern seen for nearly seven months.

A senior Iranian official told Reuters:

• For the Strait of Hormuz to be reopened, the US must meet Tehran's conditions, and nuclear negotiations can only follow afterward.
• Iran would respond forcefully to any US military action, both regionally and beyond.
• Mediators are working to narrow the differences between the two capitals.

That was not the language of two sides on the verge of a deal.

The fundamental sticking point is unchanged. Tehran wants its conditions met before the Strait is reopened, and Washington refuses to accept those terms. No concessions to break the impasse have emerged from either side.

For financial markets, the standoff underscores that the underlying geopolitical risk has not faded.

Monday's oil selloff showed how quickly traders can price in a potential easing of tensions, but the reality of a deal is not yet in place.

Much speculation surrounds the period after the US midterms. Whether Trump will take a bolder line once the votes are in is the question. The real test is whether diplomacy can yield concrete results or military tensions will re-escalate. The latter is considered the more likely scenario based on Trump's track record.