The late U.S. senator and foreign policy expert J. William Fulbright once stated that no matter how repugnant a regime might be, America should not interfere in its internal affairs or seek to expunge it unless its leadership was blatantly trying to impose its values or system of government elsewhere. That was then, in the Cold War era, and this is a very different now, in which the newly minted chairman of a self-styled Board of Peace seeks to overthrow the Iranian regime, this doing a Venezuelan war dance in the Near East. It is worth remembering, however, that the peace mogul already has Iranian blood on his hands, if only by omission. Inexcusably, he recently urged anti-government protesters to intensify their uprising. If the Iranian Revolutionary Guard shot to kill, he said, his America would jump in to help them. He also encouraged the son of the late Shah of Iran, a longtime Washington, D.C., exile, to cheerlead the protests, and he did. He would soon come home to Make Iran Great again, a hardly original invocation. Emboldened by these pledges, dissenters openly confronted the Revolutionary Guard and were slaughtered by the thousands. Knowing what to say and what not to say is key in dealing with volatile situations. But Mr. Peace simply says and writes what pleases him. Consequences are immaterial. If nothing else, he is good for the morgue industry, and that of Iran will likely be replenished in the days ahead.