American counterterrorism agencies are quietly monitoring suspected sleeper cells on U.S. soil in the wake of joint U.S.–Israel strikes on Iran, stepping up surveillance amid heightened fears of ...

March unfolded like a stress test for U.S. counterterrorism authorities. The month opened with a gunman in an Iranian-flag ...

Our next guest is asking whether Iran could respond to the U.S. attack by launching attacks here. Matthew Levitt spent years working in counterterrorism at the FBI, the Treasury Department and the ...

While questions remain about why a 23-year-old New York law student crashed his rental car through a gate at a power substation near Boulder City last month, terrorism experts seem agree on a ...

With war raging in an increasingly volatile Middle East and, closer to home, the recent case of a 23-year-old who crashed his rental car at a power substation near Boulder City, terrorism experts seem ...