What scandal facilited the sale of arms to Iran and occurred while John Poindexter was Deputy national Security Advisor?
John Poindexter John Marlan Poindexter (born August 12, 1936) is a retired United States naval officer and Department of Defense official. He was Deputy National Security Advisor and National Security Advisor for the Reagan administration. He was convicted in April 1990 of multiple felonies as a result of his actions in the Iran–Contra affair, but his convictions were reversed on appeal in 1991. More recently, he served a brief stint as the director of the DARPA Information Awareness Office for the George W. Bush administration. He is the father of NASA astronaut and U.S. Navy Captain Alan G. Poindexter.
Joseph Mendenhall Joseph Abraham Mendenhall (born January 15, 1920) was a United States State Department official, known for his advisory work during the Kennedy administration on policy towards Vietnam and Laos. He is best known for his participation in the Krulak Mendenhall mission to South Vietnam in 1963 with General Victor Krulak. Their vastly divergent conclusions led U.S. President John F. Kennedy to ask if they had visited the same country. Mendenhall continued his work in the Indochina region after Lyndon B. Johnson assumed the presidency in wake of Kennedy's assassination.