The Cold War had a large impact on many countries in the Middle East, especially Iran. There were many different types of effects on the country.
The Iranian Crisis was one of the sparks for the Cold War, greatly affecting the foreign relations of Iran with the United States, the Soviet Union, and Great Britain.
In the initial agreement, these outside forces were asked to be withdrawn in the conclusion of WWII, but then the countries began desiring for oil concessions.
Iran served as a power struggle between the USSR, and the U.S, and an opportunity for the U.S to implement its new policy toward the Soviets. These foreign countries were allowed in to Iran to serve as protection against Germany in case of an attack for oil.
The demands for oil were not settled by 1945, because the Soviets requested that they get the same benefits as the U.S. This is partially what led to the shift of the American view of the Soviet Union. The U.S viewed the USSR as a country trying to expand, making Iran a tense, hostile, and unpredictable area.
The King that the U.S supported in Iran was overthrown. This led to the U.S supplying Iraq with weapons to fight Iran in the Iraq-Iran war.
Initially, both the U.S and USSR wanted to remain away from the Iraq-Iran war. Victory became possible for Iran, and the U.S began backing Iraq, while the soviets backed Iran with arms shipments. Once again, America and the Soviet Union competing through the Middle East.
With Soviet arms flooding Iran, and Iraq gaining access to U.S weapons and intelligence, tensions were high.
Both Iraq and Iran attacked one another's oil sources. Iran launched many missiles, and in retaliation, Iraq sent several air raids and bombings.