Peter Paul Strzok II (/strʌk/, like struck; born March 7, 1970) is a former United States Federal Bureau of Investigation (FBI) agent. Strzok was the Chief of the Counterespionage Section and led the FBI's investigation into Hillary Clinton's use of a personal email server.
Strzok rose to become a Deputy Assistant Director (one of several) of the Counterintelligence Division, the second-highest position in that division. He also led the FBI's investigation into Russian interference in the 2016 United States elections.
In June and July 2017, Strzok worked on Robert Mueller's Special Counsel investigation into any links or coordination between Donald Trump's presidential campaign and the Russian government. Mueller removed Strzok from the Russia investigation when Mueller became aware of criticisms of Trump contained in personal text messages exchanged between Strzok and FBI lawyer Lisa Page. Deputy Attorney General Rod Rosenstein defended Mueller's response to the text messages.