Trying to reach to is an important factor affecting peace and stability in the Middle East. In 1980-1990, Iraq demonstrated two times that it was a determining element in reaching hegemony. On the other hand, Iran tried to prove itself as a balancing power in the Middle East. Even, it tried to spread Islamic fundamentalism. Following these goals ended in a harsh conflict between the two countries. This piece of writing has tried to explain the reasons and the results of the Iran- Iraq war and its impact on the domestic and foreign policy of Turkey briefly.