Origins & Early Life

Robert Philip Hanssen (April 18, 1944 – June 5, 2023) was an American Federal Bureau of Investigation (FBI) agent who spied for Soviet and Russian intelligence services intermittently against the United States from 1979 to 2001. His espionage was described by the United States Department of Justice as "possibly the worst intelligence disaster in U.S. history". In 1979, three years after joining the FBI, Hanssen approached the Soviet Main Intelligence Directorate (GRU) to offer his services, beginning his first espionage cycle, lasting until 1981.

Pivotal Works & Achievements

He restarted his espionage activities in 1985 and continued until 1991, when he ended communications during the collapse of the Soviet Union, fearing he would be exposed. Hanssen successfully reestablished communications eight years later in 1999 and continued spying until his arrest. Throughout his espionage career, he remained anonymous to his Soviet and Russian handlers. Hanssen sold about six thousand classified documents to the KGB that detailed U.S. strategies in the event of nuclear war, developments in military weapons technologies, and aspects of the U.S.

Enduring Legacy & Impact

counterintelligence program. He was spying at the same time as Aldrich Ames in...

Contemporary Figures & Related Historical Timelines

• Aimee Semple McPherson — Contemporary (Died in 1944) (1944): Pioneering Pentecostal evangelist, famous for founding the Foursquare Church.
• Alan Parker — Contemporary (Born in 1944) (1944): Acclaimed English filmmaker known for genre versatility and numerous BAFTA and Golden Globe wins.
• Ali Sayad Shirazi — Contemporary (Born in 1944) (1944): Key Iranian military commander during the Iran-Iraq War, assassinated in 1999.
• Alan Arkin — Contemporary (Died in 2023) (2023): Esteemed American actor, filmmaker, and musician with a seven-decade career.
• Ama Ata Aidoo — Contemporary (Died in 2023) (2023): Pioneering Ghanaian writer, poet, and academician celebrated for feminist themes.
• B. V. Doshi — Contemporary (Died in 2023) (2023): Pioneering Indian architect celebrated for modernist and brutalist design.
• Albert Einstein — Shared historical date (04-18 · Died) (1955): Pioneering theoretical physicist known for the theory of relativity and E=mc2.
• Alexandre Alexeieff — Shared historical date (04-18 · Born) (1901): Russian-born artist, filmmaker, and illustrator known for inventing the pinscreen technique.
• Alan Bond — Shared historical date (06-05 · Died) (2015): Australian businessman known for high-profile dealings, the America's Cup, and founding Bond University.
• Bill Tilden — Shared historical date (06-05 · Died) (1953): Dominant American tennis star, 'Big Bill', known for 14 Major singles titles.
• 1944 Historical Timeline & Archive — Explore world events and figures from 1944
• April 18 (04-18) On This Day — Historical birthdays and events on April 18
• 2023 Historical Timeline & Archive — Explore world events and figures from 2023
• June 5 (06-05) On This Day — Historical events and memorials on June 5