The United Nations Human Rights Council angered Iran by renewing the mandate of monitor Ahmed Shaheed, who has criticized Tehran's abuses. His work remains vital as long as Iran violates its citizens' most basic rights. At the same time nuclear negotiations continue. Dealing with Tehran could turn into the Obama administration's greatest foreign policy success or another disaster. If the interim Geneva agreement leads to permanent denuclearization of the Islamic Republic of Iran, President Barack Obama can claim an achievement nonpareil. If the effort collapses, he will look dangerously na