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One day before the United States and Israel launched an attack on Iran, a surge in big bets placed Friday on Polymarket suggested that some bettors may have seen the strike coming.
Polymarket, one of the world’s largest prediction markets, allows its users to wager anonymously on just about any future event, including elections and sports.
It has also allowed betting on war, and since the end of last year more than $529 million has been traded on predictions of when the United States would attack Iran next, after it struck Iranian nuclear facilities last June.


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