Can't believe this modded +4 informative. This is not informative at all.
Concerning Iraq, the US did not offer any kind of deal with Iraq to normalize relations, expand trade, or all the other peace-time feel-good stuff the US offered to Iran.
You're essentially saying that:
"Iraq, we're fairly confident that you have restarted a WMD program that we can't actually prove. Stop it, or we bomb you"
"Iran, we will lift harsh economic sanctions in return for greater international control over your nuclear program"
are the same thing. They are not.
Concerning Libya, the US did not offer Libya anything at all, and the US certainly did not start the civil war in Libya. They just joined in a bit later, dropped a few bombs, and that was that.