Iran rejects US peace talks as gunboats fire on tanker in Strait of Hormuz

Iran rejected a second round of US peace talks while Revolutionary Guard gunboats fired on a tanker in the Strait of Hormuz. Diplomatic meetings with Iran by April 30 are now at 21.0% YES, down from 22% yesterday.

Market reaction

The Strait of Hormuz incident and diplomatic rejection pushed diplomatic meetings with Iran by April 30 odds to 21.0% YES. The market saw a 6-point spike to 25% at 7:32 PM but quickly retraced. The ceasefire ending by April 21, 2026 market moved to 23% YES, up from 6% a day ago. The three-day horizon compresses the window for any resolution.

In the diplomatic market, $5,026 in USDC traded, with just $283 needed to swing odds 5 percentage points, a thin order book. The largest single move was the 6-point jump at 7:32 PM, likely from one sizable order. Ceasefire trades saw $7,248 in USDC, with $880 to move 5 points, a slightly thicker book but still reactive to individual large trades.

Why it matters

The rejection paired with gunboat aggression represents direct escalation on two fronts simultaneously, undermining both the ceasefire and diplomatic tracks. Diplomatic meeting odds at 13¢ offer a 7.7x return if resolved, a bet that requires a dramatic reversal within 12 days. Unless Iran reverses its stance or the US shifts strategy, these odds have little reason to climb.

What to watch

Statements from the White House or Pentagon on the Strait of Hormuz incident. Any new diplomatic initiative or change in rhetoric from either side could move both markets sharply.

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