EDITORS' NOTE: Reuters and other foreign media are subject to Iranian restrictions on their ability to film or take pictures in Tehran.

Ayatollah Mohammad Reza Mahdavi-Kani attends a conference in Tehran, in this file photo dated August 14, 2008. Arch hardliner Mahdavi-Kani was elected and confirmed as head of Iran's Assembly of Experts on March 8, 2011. REUTERS/Raheb Homavandi/Files (IRAN - Tags: POLITICS)