The key question: how will we respond?

The Iranian terror plot is sensational and chilling, and it's heartening to know it was thwarted. But the bottom line is that if the US government treats it as a mere law enforcement issue and does not hold any and all Iranian officials clearly and directly implicated accountable, we will see more of the same. After all, we're talking about a regime that has been the world's number-one terror sponsor for decades.