A federal government alert reportedly sent to law enforcement agencies warns that an intercepted message could serve as an "operational trigger" for "sleeper assets." ...

Trump warns of terror 'sleeper cells' in U.S., blames Biden's border policies for security threats as U.S., Israel continue military campaign against Iran.

President Donald Trump warned Wednesday that potential terrorist “sleeper cells” could already be inside the United States, suggesting many may ...

"If we're talking about real sleeper cells that are foreign-directed and constructed, they're very secretive and will leave ...

"It's one thing to want to do something and then it's another to be able to do something." ...

Asked about domestic Iran-aligned sleeper cells, Trump said the United States is "watching every single one of them." What to ...

Trump claimed the U.S. knows where Iranian sleeper cells are. The press corps heard it, noted it, and moved on without asking the obvious follow-up question. The post Trump Claims to Know Where Iran’s ...

President Trump said that Iran is “trying” to activate sleeper cells inside the U.S., saying “we’ve been very much on top of ...

US agencies detected an encrypted broadcast shortly after the assassination of Iran's Supreme Leader Ayatollah Ali Khamenei in joint US-Israeli strikes.

Iran sent out a possible “operational trigger” to activate “sleeper assets” abroad after the war with America and Israel began, according to an encrypted message intercepted by the US. The coded ...

Sen. Ted Cruz (R-Texas) warned this week that the danger posed by Iranian-linked sleeper cells operating inside the U.S. has “never been higher,” as tensions escalate between the two nations. “The ...

As tensions rise overseas, some U.S. officials are warning about the potential for "sleeper cell" attacks inside the U.S.