Capt. B. Phart, are you thinking of Robert Baer?
"In 1995, CIA field officer Robert Baer helped organize a rebellion in northern Iraq to topple one of the United States’ worst enemies, Saddam Hussein.
To his dismay, his superiors declined to support the rebellion and he was ordered home to CIA headquarters in Langley, Va. He was furious, but nothing prepared him for his reception: He found two FBI agents waiting to question him.
“They show me their credentials, read me my rights and say, ‘You are being investigated under murder-for-hire statutes,’” Baer recalls. The FBI began an investigation into whether he had privately attempted to assassinate the Iraqi president —something that is illegal under U.S. law."
http://abcnews.go.com/sections/primetime/DailyNews/pt_cia_agent_020117.html