An Iranian opposition figure has broken with exiled crown prince Reza Pahlavi, accusing him of secretly dealing with Iran's Revolutionary Guard — damaging for Pahlavi, who markets himself as the West's clean alternative to the clerical regime.

• A former collaborator says the split came after Pahlavi began writing conciliatory letters to Iran's supreme leader.
• The heavier charge is back-channel cooperation with the IRGC, the regime's armed enforcement arm.
• Mike Pompeo, ex-CIA director and secretary of state, has publicly made the same accusation and said U.S. intelligence knows about it.
• Pahlavi has not denied the contacts, framing them as an effort to pull IRGC figures over to the opposition side.

Outlook: Expect the Iranian opposition abroad to keep fracturing, weakening any unified alternative to the current regime.