On this day, 39 years ago, November 2, 1986 (October 1, 1986 in the lunar calendar), the Iran-Contra incident in the United States was disclosed. The Iran-Contra Incident was an incident in which the secret arms sales of the United States to Iran were exposed and caused a serious political crisis in the Reagan administration. It was named because people compared it to the Nixon Watergate Incident. Since 1985, there have been successive abductions of Americans in Beirut. According to the information available to the United States and Israel, the abductions were carried out by Hezbollah. The party has close ties to Iran. Israel suggested that the United States influence Shiite groups in Lebanon through Iran. It is believed that Iran was in urgent need of US-made Tao anti-tank missiles and Hawk anti-aircraft missiles to deal with Iraq armored vehicles and air superiority. Since then, the United States and Iran have begun secret contacts to conduct an arms exchange for hostages. On November 2, 1986, the Lebanon weekly "Mast" disclosed McFarlane's secret visit to Iraq and the delivery of weapons. On November 4, Iranian Speaker Rafsanjani publicly confirmed that the secret weapons trade between the United States and Iran was exposed. After the incident, there was an uproar in the United States, and Reagan's reputation dropped sharply. On November 25, an investigation by the U.S. Department of Justice found that the National Security Council violated a congressional ban and secretly transferred part of the proceeds from arms sales to Iraq to fund the rebels in Nicaragua. Reagan immediately claimed he knew nothing about it and had to accept the resignation of National Security Assistant Chris Poindexter and remove North, a senior National Security Council official. Since then, the Presidential Special Investigation Committee conducted a three-month investigation, and the Special Investigation Committee of the Senate and House also held a joint hearing. During this period, Reagan had to shift from public denial to admission that it was "a mistake" and no longer insisted on "not knowing at all." He also made Baker replace Regan as White House chief of staff and withdrew his appointment of CIA Deputy Director Gates, who was involved in the incident. Although Reagan finally survived the crisis, the "Iran-Contra Incident" investigation report released by the Congressional Special Investigation Committee on November 18 still held that the president should bear the ultimate responsibility for the incident. In July 1989, North, the core figure of the Iran-Contra incident, was sentenced. Poindexter was also convicted in June 1990.