President Donald Trump waves as he boards Air Force One at Joint Base Andrews, Md., on March 11, 2026. Andrew Harnik/Getty Images
President Donald Trump said on March 11 that his administration knows the location of most Iranian sleeper cells in the United States.
Joint U.S.–Israeli strikes killed many top leaders in Iran, including Ayatollah Ali Khamenei, and denigrated the country’s military, prompting concerns that Iranian undercover terrorist cells, or sleeper cells, may act inside the United States.
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