Since President Donald Trump withdrew the United States from the international deal designed to prevent Iran from getting a nuclear bomb, the time it might take Tehran to build such a weapon if it so chooses has dropped from more than a year to just a few months. The world now has much less time to react if that happens—and no good options in response. After Washington, to the dismay of its allies, reimposed economic sanctions and demanded that Iran do more to change its behavior, there have been no new negotiations and no clarity on exactly what the Trump […]