Critics of the Obama administration¡¯s Iran nuclear deal warn that, among other faults, it is setting off a new Middle East arms race. In Qatar last week, Secretary of State John Kerry seemingly admitted as much, saying that Washington had ¡°agreed to expedite certain arms sales that are needed and that have taken too long in the past.¡±

And how: Just weeks after the pact was announced, Saudi Arabia signed up to buy 600 Patriot missiles from the U.S. at $5 billion, and it is expected to purchase 10 Sikorsky MH-60R naval helicopters. Qatar has inked a $17 billion contract for French-made Rafale fighter jets, and wants to buy Boeing F-15s. Kuwait recently bought 28 F-18 Super Hornets. The United Arab Emirates is expecting $200 million worth of General Atomics Predator drones next year. (Iran, soon to be relieved of sanctions, has a deal with Russia for a missile-defense system and is eyeing French and Russian fighters.)

But the arc of history shows that the checkbook bellicosity of the Gulf monarchies is hardly new. The hyper-arming of the Middle East actually dates to the mid-2000s, before the U.S. and its partners began negotiating in earnest with Tehran over nuclear weapons.