United States support for Iraq during the Iran–Iraq War

During the Iran–Iraq War, which began with the Iraqi invasion of Iran on 22 September 1980, the United States adopted a policy of providing support to Iraq in the form of several billion dollars' worth of economic aid, dual-use technology, intelligence sharing (e.g., IMINT), and special operations training. This U.S. support, along with support from most of the Arab world, proved vital in helping Iraq sustain military operations against Iran.

Source: Wikipedia — United States support for Iraq during the Iran–Iraq War (CC BY-SA 4.0)