A group of gamblers who won up to $3 million after betting on the deadly strikes on Iran have raised questions about whether they had access to knowledge about the attack before it happened.Several bets were placed on American crypto-based trading platform Polymarket on Saturday predicting the US and Israel would carry out military action on Iran later that day.Many of these accounts were created as recently as last month, with some of their bets reaching $US150,000 ($211,955).LIVE UPDATES: Trump