For the past decade the United States and its European allies powers have been unable to persuade the Islamic Republic of Iran to halt what appears to be a program to develop either a nuclear-weapons capability or an actual atomic arsenal. There is good reason to want to prevent Iran from acquiring atomic weapons, although it is too late to stop Tehran from acquiring the capability to produce a nuclear weapon should it choose to manufacture one. Tehran‘s desire to develop either a nuclear weapons capability or an actual arsenal is based on a realist assessment of its security environment – it is looking for a way of ensuring the survival and independence of the regime and warding off potential attacks by the United States or other countries...