According to this story from The Telegraph UK the mullahs in Tehran must be getting pretty nervous. Apparently they're cosying up to the Taliban (who they have heretofore considered enemies, being of a different flavor of Islam) to keep the original Afghani Shah from returning to power (which is one of the options being considered by the anti-Taliban alliance). They probably figure that with a return to monarchy in Afghanistan, and the pro-western unrest in their own streets, a return of a Persian Shah can't be far behind...