Source (paywall): https://www.dailymail.co.uk/news/article-15603865/iran-sleeper-cells-tehran-america-retaliation.html From the post: >>America's top security veterans are warning that Iranian sleeper cells and radicalized sympathizers may be planning retaliation for America's war on Iran. As US and Israeli forces pound targets inside Iran, including the operation that killed Supreme Leader Ayatollah Ali Khamenei on Saturday, federal counterterror teams have fanned out across the country, bracing for what could come next. In an exclusive interview with the Daily Mail, former DHS senior adviser and Secret Service supervisor Charles Marino said the nation is facing a 'convergence' of threats – from Iran-aligned lone wolves to potential sleeper cells. 'Is it possible you have 10, 15, 20 people in the country that are part of a cell that then go out and carry out simultaneous or near-simultaneous attacks? Yes,' Marino said. He warns that terrorists seeking maximum carnage would likely target 'soft' venues: crowded events, such as concerts and sports matches, public spaces and mass gatherings.