Okay, so there is no "clear and present danger", so there is no need or justification for using force. Let's focus on diplomacy.
What's that? Iran has successfully tested a nuclear weapon? Well, that changes everything!! Obviously, talk of military action would be extremely foolish in light of these events. Let's focus on dipomacy.
The UN simply enables the worst tyrants in the world.
Absolutely the UN loves those tyrants that threaten Israel, and they are ticked that their guy Saddam is no longer around to have a nuke arms race with Iran, and paying terrorists to kill Israel kids.