With Iran racing down the homestretch toward a nuclear bomb, the United Nations Security Council has spent more than two years expressing "serious concern." By now, Iran is under U.N. sanctions, and in flagrant violation of five Security Council resolutions demanding that it stop enriching uranium. If anything, as a chronic abuser of the U.N. charter, Iran's despotic, terrorist-backing, nuclear-wannabe regime ought to qualify for expulsion from the 192-member U.N. At the very least, one might suppose that on U.N. premises, Iran would be something of a pariah.