President Trump likes to say that Iran is “a different country” after 18 months of punishing American sanctions, and the protests sweeping Iranian cities suggest he may be right. Even his most vociferous critics acknowledge that Mr. Trump’s “maximum pressure” campaign helped fuel that unrest. But it is far from clear that what is unfolding on the streets today will make Iran more likely to renegotiate its nuclear deal or dial back its malign actions in the region, the two major American goals in dealing with the country. If the lessons of the Arab Spring and the last big Iranian protests in 2009 are any guide, the crackdown on protesters may well succeed — and the Iranian government will press its case that the uprisings are more evidence of a broad American plot to destabilize the government. And even if Iran’s leaders begin to […]