Which cities will Russia enter by December 31?

Platform comparison

Market context

Russia’s ground offensive has slowed dramatically in 2026, with daily advances dropping to roughly 1.03 square kilometres in June compared with 16.65 square kilometres per day in August 2025[4]. The Institute for the Study of War assesses that Russian forces still need to seize about 5,305 square kilometres to complete control of Donetsk Oblast and are highly unlikely to achieve this by December 31, 2026[4]. This deceleration mirrors the pattern seen in late 2025, when monthly casualty rates began outpacing recruitment, eroding the manpower needed for sustained urban assaults[5].

Traders should monitor ISW’s daily Russian Offensive Campaign Assessments for any sudden shifts in advance rates or new drone-heavy operations that could signal a change in tactics[1]. Key catalysts include Ukraine’s intermediate-range strike campaign against Russian logistics in the Rostov–Crimea land bridge, which has degraded operational depth and contributed to the plummeting advance rate[5]. Any announcement of a major Ukrainian air defence collapse or a Russian logistical breakthrough would be a critical inflection point, though current data suggests such events remain improbable before year-end[5].

The market’s 22% YES probability reflects funding flows constrained by payment friction: Klarna and SEPA on-ramps limit deposit velocity, while USDC withdrawal rails add latency that dampens book depth during volatile news windows. This friction means the implied probability may lag real-time ISW updates, creating temporary dislocations when advance rates shift unexpectedly. Depth remains thin compared to markets with smoother fiat rails, so large orders can move price disproportionately.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Which cities will Russia enter by December 31? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.

Resolution & payout

Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).

FAQ

How does Klarna deposit work on Polymarket Klarna UK?

You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.

Which payment methods are supported?

Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.

How fast is SEPA deposit?

SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.

Can I deposit with a credit card?

Yes, Visa and Mastercard. Credit card deposits carry a ~2.5% acquirer surcharge (standard for card payments). Apple Pay and Google Pay run on the same card rails — same surcharge.

What's the minimum deposit?

10 EUR / 10 USD equivalent. No upper limit, but deposits over $1,500 lifetime volume trigger a quick KYC flow (typically 5-10 minutes).