Which cities will Russia enter by December 31?

Platform comparison

Market context

Russian forces are pressing eastward in Donetsk Oblast, with recent claims of capturing Kostiantynivka after a nine-month battle, testing Ukraine’s fortress belt defensive line [1]. The market’s 22% implied probability reflects a cautious assessment that while Russian momentum persists, the Kremlin’s repeated failure to meet unrealistic deadlines for seizing all Donetsk by late 2025 suggests significant operational friction [2][4].

Historical precedent from 2024–2025 shows Russian advances often stall after initial gains; ISW confirmed control over Pokrovsk and Rivne only after prior offensives ended, while net territorial changes in early 2026 saw Ukraine capturing more ground than Russia in February [5][8]. This pattern of incremental, reversible gains frames the current odds as plausible but not decisive, aligning with analyst consensus that full city capture remains unlikely before the 2026 deadline.

Traders should monitor ISW map updates for persistent shading over any city sector, as resolution requires control to hold through the next full reporting cycle [market description]. Key catalysts include Putin’s next stated deadline for Donetsk Oblast, drone-strike volumes targeting Ukrainian energy infrastructure, and Ukrainian long-range counterstrikes on Russian assets [4][6]. A recent Al Jazeera report on Kostiantynivka’s claimed capture underscores how quickly frontline narratives can shift, making real-time map verification critical for position management [1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Which cities will Russia enter by December 31? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.