The interim agreement that the United States and its partners cut with Iran last week stands as a centerpiece of President Barack Obama’s foreign policy. The Obama administration has walked away from a core objective of U.S. policy for two…

This month in Geneva, at the first negotiations over its nuclear program since the election of President Hassan Rouhani, Iran took an unprecedented step: It negotiated. For the first time, Tehran presented an actual vision of the endgame for the…