Yikes ... This Surprised a Bunch of People I Expect

SEE HERE Iran is apparently seen as a threat by everyone if it gets nuclear weapons. I guess the rest of the Arab states really don't like Iran. I suspect it is in part at least a Sunni/Shia conflict just as much of the sectarian violence in Iraq is caused by the Sunni/Shia split. Sunni's make up 85% of Muslims while Shia are the rest although many Muslims don't publicly identify with either group.

Shia are concentrated in Iran and Iraq or so I understand.