The move on Iraq was a response to international pressure to relieve sanctions on Saddam. Look up Oil for Food. Waited for UN approval. France screwed us when we finally attacked.
What other hope is there than democracy to organize states? Are we going to designate dictators?
Democracy in the Arab world, means they vote for hardcore Islamists. Is that what you really want?
America is not in the business of forcing other sovereign countries into our mold. That is like kidnapping an adult against their will and forcing them into a place WE think would be better for them. THAT is tyranny.