One of the biggest surprises to emerge from the ongoing WikiLeaks fiasco is that Arab leaders, including Saudi King Abdullah, have been banging the drums of war, calling for American preventive strikes against Iranian nuclear facilities. Yet calls for military force are based on incorrect assertions about what the world would look like if Iran built nuclear weapons.
Advocates of the military option routinely make two claims. The first is that a nuclear-armed Iran would be able to blackmail its neighbors. The second is that other countries would be forced to capitulate to Iran's demands. Both assumptions are wrong.
Nukes and threats: what history shows
A close look at the history of the nuclear age shows that countries with nuclear weapons are neither more likely to make coercive threats nor more likely to succeed in blackmailing their adversaries. Nuclear powers such as the United States and the Soviet Union certainly made numerous threats after they acquired nuclear weapons. But so did Libya, Serbia, Turkey, Iraq, Venezuela, and dozens of other countries that did not possess the bomb. Nuclear weapons are not a prerequisite for engaging in military blackmail.