What role did religious differences play in the iranian revolution and the iran -iraq war?

Difference of government philosophy and differing sects of Islam. 

For the Iranian Revolution, the question of a secular versus religious government was of concern. The government being overthrown was more secular and Western influence was there. The revolutionaries were fundamentalists who wanted religion to return to the government.

In the Iraq-Iran War, it was a difference of religious sides within Islam. Iraq is more Sunni and Iran is more Shi'a. These sects have a long history of conflict and the difference in religion and politics influenced the war. Also the question of western influence in the area was of concern. 

“destroyers for bases agreement in the destroyers for bases agreement between the united states and the united kingdom on september 2, 1940, fifty caldwell , wickes, and clemson class us navy destroyers were transferred to the toyalbnavy from the united states navy in exchange for land rights on british possessions.” i hope this you .