Marcus Weisgerber at Defense One writes that:

Just two weeks after Western nations and Tehran struck a deal to limit Iran’s nuclear program, the Pentagon says Saudi Arabia wants to buy 600 new Patriot missile interceptors.

This “$5 billion-plus purchase is likely just the first of many more as America’s Middle Eastern allies arm themselves in response to the nuclear deal, which would lift Iran’s conventional-arms embargo sanctions in five years and sanctions on long-range missile projects in eight.”

Turkey, meanwhile, is shopping for its antimissile defenses in China.

So one immediate consequence of the deal is … an arms race.