US-Iran conflict escalates, formal war declaration unlikely before late 2026

Operation Epic Fury, the ongoing US-Israel war with Iran, has pushed the likelihood of a formal US declaration of war on Iran by December 31, 2026, to 8% YES on Polymarket.

The market for an official declaration by April 30, 2026, sits at 1% YES, showing traders doubt Congress will move quickly. The 7-percentage-point gap between the April and December contracts, spread across 245 days, suggests traders view any formal action as a late-2026 possibility rather than something imminent. The pricing implies traders expect a potential catalyst later in the year.

Trading volume is modest: combined 24-hour face value of $38,191 but only $329 in actual USDC traded. Order book depth is $1,830, meaning a small capital influx could move the market significantly. At this thinness, current odds may not represent broader sentiment, and a single large trade could drive sharp price swings.

A formal declaration would escalate the conflict beyond its current scope, with direct consequences for global energy markets and economic forecasts. The source is tier 1, and previous coverage indicates increased odds driven by economic pressure on Trump. A YES share at 8¢ pays $1 if Congress declares war by December 31, a 12.5x return. For that bet to pay off, escalating violence and economic fallout would need to push Congress past its historical reluctance to formally declare war.

Watch for signals from Congress: scheduled votes, statements from influential lawmakers, or any movement toward authorization language. Secretary of War Pete Hegseth’s briefings are also worth monitoring for shifts in operational language or strategy.

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