The Iranians are Moslems and the Iraqi are Moslems. Both are certain that there is no God but Allah and that Mohammed is his prophet and believe it with all their hearts. And yet, at the moment, Iraq doesn't trust Iran worth a damn, and Iran trusts Iraq even less than that. In fact, Iran is convinced that Iraq is in the pay of the Great Satan (that's God-fearing America, in case you've forgotten) and Iraq counters with the accusation that it is Iran who is in the pay of the Great Satan. Neither side is accusing the Godless Soviets of anything, which is a puzzle