For many Iranians, one way to hasten an end to the conflict with Israel and the United States is to make specific plans now for what would happen if the Islamic Republic should fall. These “day after” scenarios vary. Yet most present a moral alternative to the current police state in hopes of gaining defections from the regime. One notable effort was launched last month by the exiled crown prince, Reza Pahlavi. It builds on a budding trend in the Muslim world. Mr. Pahlavi formed a group, led by Nobel Peace laureate Shirin Ebadi, to set up rules for a truth-finding commission and other steps to help “victims of injustice, torture, and repression by the Islamic Republic.”  This victim-centered approach has gained traction in several postconflict countries. It is based on the idea that empathy and truth can be forerunners to justice and peace. Syria, for example, has set up a commission on transitional justice following the 2024 ouster of a dictator.…