President Obama’s recent comments about the Iran deal “dredge up the Protocols of the Elders of Zion,” according to one of the most respected elder statesmen of Israeli academia. When an academic figure of this stature makes such a charge, the Obama Administration and it supporters should pay attention. Haifa University political scientist Abraham Ben-Zvi, who is no right-winger, is not the type to sling around accusations of anti-Semitism. But President Obama’s recent comments about Jewish “money” and “lobbyists” opposing the Iran deal “have taken a particularly harsh and dangerous turn,” Ben-Zvi wrote in Israel Hayom this week. Presidents should...