Gholam-Ali Oveissi , general and the Chief Commander of the Imperial


Following a number of clashes in April 1969, international relations with Iraq fell into a steep decline, mainly due to a dispute over the Shatt al-Arab (called Arvand) waterway in the 1937 Algiers Accord. Iran abrogated the 1937 accord and demanded a renegotiation which ended completely in its favor.