Polymarket, a prediction market platform, has become embroiled in controversy over a $237 million bet concerning whether Ukrainian President Volodymyr Zelensky wore a suit during a public appearance in June. The dispute arose after Zelensky was seen wearing military-style attire, which some argued did not constitute a traditional suit. Initially, Polymarket resolved the bet in favor of "Yes," but this decision faced backlash from users who questioned the credibility of the sources used to determine the outcome. Subsequently, the UMA protocol voters ruled "No," overturning the initial resolution. This reversal has sparked debate about the implications for future markets, with concerns that the ruling could set a precedent affecting the credibility and verification standards of information used in prediction markets. The controversy highlights challenges in adjudicating subjective questions in high-stakes betting environments, as the market involved hundreds of millions of dollars in wagers.