"Make him an offer he can't refuse!"
"Reportedly John Michael McConnell, Director of National Intelligence from 2007 to 2009, and other senior officials wanted self-destruct gear installed on the Sentinels flying over Iran. “But the CIA’s engineering team balked, saying it would add too much weight to the delicately balanced frame,” the Postreports."
There you have it folks - mystery solved! The "CIA's engineering team" thought the self-destruct gear would add "too much weight" and there's your answer for Iran having a completely in tact U.S. drone; sharing our intelligence with China and other countries. Oh, but according to this same report from Danger Room, the "stealth drone capture didn't hurt U.S. Nuke spying".
I have my reservations too! Reservations about removing the self-destruct gear from Drones; that it "didn't hurt U.S. Nuke spying; and especially, that our intelligence has been "capable of determining any insight into Iran's nuclear program". Personally, I don't think anyone in intelligence would be so foolish as to NOT have self-destruct mechanisms included on Drones, planes, or any multii-million dollar military equipment. Don't you think it is far more dangerous and costly for our enemies to have control of our high-tech equipment? If (and that is a big "if") the CIA engineers were allowed to remove or uninstall self-destruct gear, those engineers should be fired for putting the United States security in jeopardy.