On Wednesday, President Obama began the difficult task of selling the Iran nuclear deal to the American public and a deeply skeptical Congress. In an hour-long news conference, he argued that America has stopped Iran's progress on developing a nuclear bomb and countered that those who have opposed the deal have not themselves presented any reasonable alternatives.
"The president's really trying to make the case that this is a good deal, that it's going to constrain the Iranian program, that all the pathways toward a nuclear weapon have been shut off, and that it's verifiable," said CBS News Senior National Security Analyst Juan Zarate. "The critics and the skeptics will say there's lots of challenges and holes in that."
President Obama pledged Tuesday morning that he would veto any legislation that prevents successful implementation of the deal, but he'll have to work on building Democratic support since Republican opposition runs deep.
But it will be difficult, Aaron David Miller, a Middle East scholar at the Woodrow Wilson International Center for Scholars, told CBS News.
"I don't think there is an effective way to sell this agreement," he said. But the arguments the president used to pitch the deal Wednesday just might be credible "if pitched to a narrow constituency of Democrats," he said.