the iraqi army surely knows that the US is not leaving the job undone this time...they must know that saddam is on the way out...therefore, i would think that the rate of surrender will be quite high, without having to worry about be executed by saddam on their return home
"This is an international airport. Is an international airport a civilian target?"
Not if there are Iraqi military forces there at the time. What do you suppose are the chances of Iraqi military forces staying away and letting us use their airport unopposed?