A string of violent attacks since the start of the Middle East war is raising concerns that Iranian sleeper cells could be ...

Until three weeks ago, few people had heard of Harakat Ashab al-Yamin al-Islamia. There was no entry in any counter-terrorism ...

Dan Stanton, director of the national security program at the University of Ottawa's Professional Development Institute who ...

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

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

CIA is the latest CBS crime drama that follows the FBI franchise, created by Dick Wolf and his team of talented writers.

Trump claimed the U.S. knows where Iranian sleeper cells are. The press corps heard it, noted it, and moved on without asking ...

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

Iran uses ‘criminal proxies’ not ‘sleeper cells’ in Canada, says ex-spy Dan Stanton, director of the national security ...

A former Department of Homeland Security senior adviser and CEO of Sentinel, a global security and intelligence advisory firm ...

Federal officials are pushing back on a report suggesting Iran could launch a drone attack against California, saying there ...

President Donald Trump on Wednesday said that United States authorities know the location of “most” suspected Iranian sleeper cells in the country, as officials have warned about political retaliation ...