U.S. agrees to give Ukraine security guarantee by June 30?

Platform comparison

Market context

The United States is currently offering Ukraine a proposed 15-year security guarantee as part of a condensed peace plan, yet no binding, mutually agreed deal equivalent to a NATO Article 5 commitment has been formally signed by the Trump administration and Kyiv. President Zelenskyy stated the US offer includes security provisions, though he prefers a 50-year commitment to deter Russia, while the plan requires Ukraine to renounce NATO membership and recognise Russian-controlled territories as de facto Russian.

Historically, comparable cases of US security pledges to non-NATO states, such as the vague guarantees in the unfinished Geneva talks, have often lacked the credibility required to prevent future aggression, particularly when the US president has previously questioned NATO’s Article 5 and reneged on contracts. Experts at the Brookings Institution argue that credible US security guarantees from the Trump administration are not on the table, noting his history of seeking to negotiate past agreements and his reluctance to confront ongoing Russian military aggression.

Traders should watch for the finalisation of the peace deal before the June 30 settlement window, specifically any announcement confirming a binding obligation for the US to defend Ukraine directly. Recent reporting from Axios indicates that political negotiations in Geneva remain stuck on territorial control and security guarantees, with Russian envoys insisting on full control of Donbas. The market’s 0% probability reflects the high likelihood that the US will not commit to an Article 5-style mutual defence pact before the deadline, given the current diplomatic stalemate and the administration’s stated preference for a paper agreement over enforceable force.

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Methodology

Sports-specific comparison page for U.S. agrees to give Ukraine security guarantee by June 30?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

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