For what its worth.
I have found the folks from the UAE, Bahrain and Qatar as very friendly, well educated and generally very happy with the US policy.
I was lectured a bit by a UAE Police captain that we are don't listen to the rest of the world, but he was very polite and and had enjoyed his time in college in the US. Lot's of Europeans vacation there and I can see why. All three of these countries are tolerant of western culture. I did have a cold beer on the beach one day.
The Kuwatis are not as friendly as the little states on the Gulf. Kuwatis like the US but there is a growing feeling that they would like to know when we are going home.
The Saudis seem to think they are the chosen people and are generally disliked by everybody in the region. They are very strict with foreign nationals, do not get in trouble over there.
I did meet some Iranians in the UAE and they were polite and intelligent people. They were also probably intelligence oficers. There is lots of commerce between Iran and the other countries of the gulf. When the US puts pressure on Iran, it makes all the Arabs very uneasy because they feel if shooting breaks out , the Gulf states will suffer attacks on US bases in their countries.
IMHO they were all happy Saddam was kicked out of Iraq but are very wary what the US is up to with nation building.
I would point out I generally am training or dealling with military, police or security folks and not your average joe on the street. I have had some pretty hard stares from guest workers when I have been off the beaten path with officers in the field. In the UAE, 8 out of 10 folks living and working are not citizens and have very limited rights under the law. Contrary to what they want you to see, some places are very 3rd world once your away from the main roads.
Like I said take it as one persons small view of the area.