On that occasion (June 7, 1981) the Israeli AF strike force flew 680 miles across Jordan and Saudi Arabia and bombed the reactor.
While it is supposed that the strike force evaded detection by flying so close to each other on the long journey that, instead of appearing as a squadron of small fighters on radar, they appeared as a single large jet, and not much attention was given to them, Rodger W.Claire's book,
Raid on the Sun, lists this suggestion as a myth.
I'm actually looking through my huge book on the Mossad right now, to see if there's something worth adding here.
Update: Book says it was eight F-16's escorted by six interceptors F-15. Just like today with Iran, Israel got intelligence according to which Iraq was not trying to pursue nuclear ambitions for civilian purposes but for military purposes. In 1979 a Mossad commando had entered the French building in Southern France where the reactor was being built and they sabotaged the core of the reactor. Unfortunately the deal between Chirac and Saddam went on.
In this occasion Jordan and Saudi Arabia (which were flown across for more than one hour) had not given Israel any permission and were caught by surprise. After the attack was successfully delivered the Arab world didn't protest too loud, which IMO meant they were not too happy about Saddam's plans.
Hope I didn't hijack the thread, WD.
[On tactical feasibility of Israeli strike on Iran see
this (quote: "
Israel could launch an airstrike or use its Jericho Missiles - 750 miles range. Or they can decide to use their three Dolphin submarines, or 5 now that they're purchased 2 more from Germany, able to launch nuclear missiles. The threat could consist of the use of bombs, such as the Gbuy-43/B with its 21 thousand lb, "micronukes" with a limited explosive power, though devastating"). It's in Italian but you can Babelfish the rest maybe. Feel free to ask me about what you don't understand].