Back in Washington, senators urged Obama to reaffirm at the U.N. that, despite Rouhani's recent overtures, the U.S. will not accept a nuclear-capable Iran. In two separate letters, top Democrats and Republicans also called on the president to make clear that the U.S. will continue tough sanctions against Tehran.
"Now is not the time to let up on this pressure," Sens. Chuck Schumer, D-N.Y., and John McCain, R-Ariz., wrote in one letter to Obama. "Removal of any existing sanctions must depend on Iran's halting of its nuclear program. Conversely, the continuation or expansion of its nuclear activities will only lead to more sanctions led by the United States and our friends and allies."