National Review writes, Two points are vital to understanding the sanctions being imposed on Iran: They are unlikely to succeed — if success is defined as stopping the regime’s rulers from developing nuclear weapons — yet they are an essential component of any serious and strategic policy mix. Let us count the ways. 1. The alternative to sanctions would be doing business as usual — while representatives of Iranian commercial enterprises trot around the globe buying, selling, and trading even as Iran’s supreme leader and the Islamic Revolutionary Guards Corps sponsor terrorism, threaten genocide, plot…