Make no mistake, Iran’s potential departure from the nuclear agreement is a serious threat to world peace — and that nation’s future. This isn’t the first time Iran has made this threat (nor would it necessarily bring that country to weapons-grade enrichment, at least not yet) but on the heels of the tanker attack it now seems like an extremely hostile act. Or at least behavior that is likely to stir the United States into military action. On Sunday, Tom Cotton, the far right GOP senator from Arkansas, was already calling for retaliatory strikes against Iran in the wake of the tanker attacks. Surely, more belligerent talk from Tehran is only going to amp up the volume.