I've just come back from my fifth visit to Iran and would say that the Iranians are preparing for an air attack judging from the number of new anti aircraft guns I saw around the place. The new Iman Khomeini airport now has a large soil berm around the perimeter c/w anti aircraft guns. In addition new guns have appeared on the base of the mountain ridge just off the Tehran - Keraj highway. These appear to be protecting two large round radar domes up on the ridge.