You talk as if we have never given anything to Russia and China so far.
The only difference is that in return for being a US proxy, Iran was enjoying security and prosperity, booming as a tourist destination, huge construction was going inside the country and the Iranian passport was far more respected than it is now. Our currency was stable, inflation was under control, and our air force was armed to the teeth.
Funny, but the only weapons that actually killed more than one or two American soldiers in a single strike were the ones we purchased from the Americans themselves. I am talking about our attacks on the Buehring Camp in Kuwait. One sortie by an F-5 achieved what over 2,000 missiles could not in TP1, TP2, TP3 and TP3.