U.S. Cardinal Theodore E. McCarrick, retired archbishop of Washington, D.C., Bishop Richard E. Pates of Des Moines, Iowa, and Baltimore Auxiliary Bishop Denis. J. Madden met with Seyyed Mahmoud, left, at the Ayatollah Marashi Najafi Library in Qom, Iran, in March. At right is Stephen Colecchi, director of the U.S. bishops’ Office of International Justice and Peace. The meeting was part of a dialogue between the bishops and Iranian Muslim leaders on nuclear weapons.