Portugal and the Iran–Iraq War
Portugal's involvement in the Iran–Iraq War includes Portugal supplying both Iran and Iraq with arms, and playing a role in the Iran–Contra affair. From 1981 to 1986, 75% of Portuguese arms exports (35.7bn escudos' worth) went to the Middle East; most of it, directly or indirectly, to Iran or Iraq.
Source: Wikipedia — Portugal and the Iran–Iraq War (CC BY-SA 4.0)