During the Iran–Iraq War, Iraq received large quantities of weapons and other material useful to the development of armaments and weapons of mass destruction.
Iran was backed by the Kurdish militias of KDP and PUK in North Iraq, both organizations in fact rebelling against Iraqi Ba'athist government with Iranian support.
Iran's foreign supporters gradually came to include Syria and Libya, through which it obtained Scud missiles. It purchased weaponry from North Korea and the People's Republic of China, notably the Silkworm anti-ship missile. It also acquired arms from Portugal, notably after 1984. It also acquired propellants and other weapons related components from Spain and Portugal. The United States also provided covert support for Iran through Israel, although it is debated as to whether U.S. President Ronald Reagan actually ordered the sale of weapons to Iran. Most of this support included TOW missiles.
Iraq was supported by an Iranian outcast-armed party of Mujaheedin-e-khalgh, mainly engaging the pro-Iranian Kurdish forces in the North of Iraq, close to Iranian borders.
Iraq's army was primarily equipped with weaponry it had previously purchased from the Soviet Union and its satellites in the preceding decade. During the war, it also purchased billions of dollars' worth of advanced equipment from France, the People's Republic of China, Egypt, Germany and other sources. Iraq's three main suppliers of weaponry during the war were the Soviet Union followed by China and then France. It also acquired substantial arms from Portugal.