Pope Francis and Iranian President Hassan Rouhani met in a private meeting in which the pontiff pressed Rouhani on fostering Middle East peace and countering terrorism and arms trafficking.
We say: Soon, we will see either a plan to keep nuclear weapons out of Iran's arsenal or a newly isolated Iran again racing to develop nuclear weapons.
I have been both saddened and mystified by the reaction from some quarters in Washington after the United States joined five other nations to make a deal with Iran that would begin to curtail its ability to make nuclear weapons. It's a six-month deal, hopefully a step toward a long-range agreement.
Opinion: While concerns about hardliners in Tehran undermine rapprochement between the U.S. and Iran, the bigger threat may be hardliners in Washington.