Why did the Iran-Iraq war last for so long?

What factors that have caused tension in the Middle East?

What factor do you think was the most important in causing the war?

I think religion and nationalism were both just as important reasons for causing the war. This is because they seem very closely related as religions want to hold power so they can increase their influence, which is religious nationalism and they want Iran wants the Shiites to take over rule of Iraq. 

Why did these factors lead to the war lasting for so long?

he majority of this page was created / the information was collected by Mr Joshua Tillott.