Syria and Iran are strategic allies. Syria is usually called Iran's "closest ally", with ideological conflict between the Arab nationalism ideology of Syria's secular ruling Ba'ath Party and the Islamic Republic of Iran's pan-Islamist policy notwithstanding. Iran and Syria have had a strategic alliance ever since the Iran–Iraq War, when Syria sided with non-Arab Iran against neighbouring Ba'ath-ruled Iraq. The two countries shared a common animosity towards then Iraqi president Saddam Hussein and coordination against the United States and Israel.