1) The document discusses the Iran-Contra affair during the Reagan administration, where the US secretly sold arms to Iran in exchange for hostages, and used the funds to support anti-communist Contras in Nicaragua.
2) It also discusses the 1979 Iranian Revolution that overthrew the US-backed Shah and established an anti-Western Islamic republic, severely damaging US-Iran relations.
3) Israel also secretly sold arms to Iran during its war with Iraq in hopes that prolonging the conflict would distract both countries from threatening Israel, demonstrating that one's enemies can still be enemies despite a shared goal.