This drone was downed through the hacking expertise of the Chinese government. Iran gets the credit, but China gets the technology. That is the arrangement. China obtained their knowledge when they hacked US government internal web sites 6 months ago. Military secrets are the most difficult to keep. This is a great example of that. Israel will be asked to clean this mess up before it is transported to China...
Suspected Boko Haram suicide bombing kills 38, wounds 51 in Chad village (Reuters)
from the article: Iran state television displays 'downed U.S. surveillance drone'