Former CIA officer details "Havana Syndrome" he says he suffered in Moscow: "An act of war"

A retired CIA officer, who says he has been a victim of so-called "Havana Syndrome," calls the mysterious and debilitating neurological symptoms "an act of war against U.S. officials."

Marc Polymeropolous ran clandestine operations across Europe and Asia for the Central Intelligence Agency. So, when he traveled to Moscow in 2017, the watching eyes of Russian intelligence did not faze him.  "Even in my hotel room, I'd go to the gym, and a guy in a black trench coat comes down and, you know, checks on me down there," he told CBS News senior investigative correspondent Catherine Herridge. "Not unexpected. Part of the job."