The Shah’s Diplomatic Relations And Travels With European Countries

Iran's relations with Iraq, however, were often difficult due to political instability in the latter country. Mohammad Reza was distrustful of both the Socialist government of Abd al-Karim Qasim and the Arab nationalist Baath party. He resented the internationally recognised Iran-Iraq border on the Shatt al-Arab river, which a 1937 treaty fixed on the low watermark on the Iranian side, giving Iraq control of most of the Shatt al-Arab.On 19 April 1969, the Shah abrogated the treaty, and as a result Iran ceased paying tolls to Iraq when its ships used the Shatt al-Arab, ending Iraq's lucrative source of income.