Where were US planes that there could be some potential for mistaken attacks? Hmmmmm.
By its actions, Israel showed it is not interested in waiting for diplomacy to work where nuclear weapons are at stake.
If this is the case, then Iran must not be as close as thought, or they would have been the target.
No surprise. The site was about 50 miles from the Iraqi border. A detection at long range with no satisfactory answer could lead to a long range engagement. Remember that the Phoenix missile could engage at greater than 50 miles.
Or Iran is not/did not report(ing) a strike.
I read an interesting article, paragraph 20 I think, earlier today that might answer your query, at:
http://www.timesonline.co.uk/tol/news/world/middle_east/article2461421.ece
I hope it is ok to link to the site above. Moderators, please correct if I'm in error.
My son was a Weapons Director at Balad in Iraq.
He said it was routine to coordinate ID codes with Israelis so we and they wouldn't shoot each other down.
Syria borders Iraq so it is possible for aircraft to see each other.