Will an international court find Israel or its leaders guilty of Genocide by December 31, 2027?

Platform comparison

Market context

The market hinges on whether the International Court of Justice or International Criminal Court issues a final judgment finding Israel or its leaders guilty of genocide before the end of 2027. South Africa’s case, launched in December 2023, has already seen the ICJ extend its timeline, with South Africa now required to file its Reply by 22 November 2027 and Israel to submit a Rejoinder by May 2029 [1][2]. This procedural delay means a merits judgment is unlikely before the settlement window closes, pushing the 9% implied probability toward the edge of uncertainty rather than a near-term conviction.

Historically, international genocide convictions are rare and slow; the ICC’s sole genocide conviction against Jean-Pierre Bemba in 2018 took over a decade, while the ICJ has never issued a final genocide judgment against a state [3]. The current 9% probability reflects this precedent, as even provisional measures issued by the ICJ in January 2024 did not equate to a finding of guilt [7][8]. Traders should watch for any acceleration in the ICJ timetable, unexpected ad hoc tribunal formations by the UN, or ICC arrest warrants targeting Israeli officials, though recent news confirms the timeline remains extended to 2029 [1][9].

Platform differences matter here: Polymarket displays decimal odds (e.g., 11.11 for 9%) with lower fees and no KYC, while Kalshi and Betfair use implied probability percentages and stricter identity verification. Smarkets and Kalshi may cap exposure on high-sensitivity legal markets, whereas Polymarket’s open architecture allows larger positions. The divergence in fee structures and KYC reach affects liquidity depth, particularly as the 2027 deadline approaches and legal developments become more volatile.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Will an international court find Israel or its leaders guilty of Genocide by December 31, 2027? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.