Rubio rejects Iran’s proposal, dimming hopes for US-Iran talks by May 31

Rubio’s rejection of Iran’s proposal to reopen the Strait of Hormuz has pushed the probability of a US-Iran diplomatic meeting by May 31 down to 58% YES on Polymarket, a drop from 72% yesterday.

The Secretary of State’s decision marks a 14-point decline in the US-Iran meeting market, with traders now pricing in real doubt about a resolution within the remaining 37 days. The largest single price move was a 5-point spike, a sign of active repositioning.

Separately, the odds for WTI crude oil hitting $160 in April sit at 0.4% YES on the WTI crude prices market. Trading volume there is minimal, and traders clearly treat a $160 scenario as a tail risk rather than a live possibility.

The rejection matters because it represents a harder US negotiating position with 37 days left on the clock. A YES share at 58¢ pays $1 if the blockade is lifted, but anyone holding bullish positions on a diplomatic resolution should reassess given the shift in US posture. The 58/42 split suggests the market still sees a path to agreement, but the direction of movement is clearly toward NO.

Watch for statements from Abbas Araghchi and any announcements from Oman or Pakistan about mediating talks. These are the most likely catalysts for a reversal.

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