Persians (Iranians) are a different race, with a different language and customs. Some compare them (generally) to the Germans, as being arrogant, demanding and feeling superior to others around the Mid-East. Learning and education are of importance in middle to upper class family's. Persians may consider the Arab as common, uneducated and crude.
Arabs may consider Persians as different and not trustful. It would be like dealing with the devil, but they do. Too many ties to the West. And most of the above paragraph included.
All Muslims are not brothers, mutual dislike all the way around. Many different sects, as with Christians, Hindu's, Buddhist, etc. But the jewel in the crown of all Muslims would be the control of Egypt (which also has a deep mistrust for the Arabians, as all of the Middle East does) and the Suez Canal. Which looks like may be the final goal of all the sudden planned unrest around that area. $10 a gallon, regular, anyone?
