This comment is quite misleading. The US did support Iraq in the Iran-Iraq war. The Iran-Contra affair, if you read the article you linked to, was an attempt to

This comment is quite misleading. The US did support Iraq in the Iran-Iraq war. The Iran-Contra affair, if you read the article you linked to, was an attempt to free American hostages held by Hezbollah (an Iranian funded group) while also procuring illicit money to pay the Contras. i.e. US sells weapons to Iran, Iran pays US, Hezbollah frees hostages, US pays the money from Iran to Contras. The US never supported Iran the way it supported Iraq; the USG has been pretty anti-Iran every since the Islamic revolution, and specifically the storming of the US embassy in Teheran.