Robert Philip Hanssen (born April 18, 1944) is a former US Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services .\r<br>\r<br>Robert Philip Hanssen (born April 18, 1944) is a former US Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services .\r<br>\r<br>Robert Philip Hanssen (born April 18, 1944) is a former US Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services.\r<br>\r<br>Most Dangerous Double Agent in FBI History - Robert Philip Hanssen Documentary Robert Philip Hanssen (born April 18, 1944) is a former US Federal Bureau .
