Victor Davis Hanson: “If Obama somehow manages to scare the Iranians into a treaty, he surely will not credit the senators for allowing him the leverage to play good cop to Sen. Cotton’s bad cop. More likely, the Munich-like agreement will fail in the face of outrageous Iranian demands and an even more outraged American public. When it does, Obama will then blame Cotton and his Republican colleagues for undermining his doomed efforts. Such scapegoating is now old hat for Obama, who has blamed factors ranging from George W. Bush to tsunamis for his foreign policy and domestic failures. Republicans, Democrats and all Americans should thank Cotton for reminding the Iranians that under the U.S. Constitution, the Senate must ratify treaties with foreign powers. Cotton will get no credit if the Iranians get worried over his letter, relent and offer needed concessions. But Cotton will endure plenty of blame if Iranian negotiators walk away in fury because a skeptical U.S. Senate would have to approve any sweetheart deal that they pulled over on Obama. In other words, Cotton is not a blunderer – he is a classic lose/lose tragic hero.”