In a rare public challenge to the Iranian regime, the country’s highest-ranking cleric has warned that prisoners’ confessions are invalid, signalling a deepening gulf between the political establishment in Tehran and clerical establishment in the holy city of Qom. “Confessions of prisoners have no validity and if a judge uses confessions for issuing verdicts that judge is no longer qualified,” Grand Ayatollah Hossein Vahid Khorasani told students this week, according to domestic websites including Parlemannews, which is run by reformist parliamentarians. His statement is not only a religious decree that his followers must obey but a warning from the country’s...