Factbox-Who is Iran's Mohsen Rezaei, the hardliner appointed to key security role?

Aug 10 (Reuters) - Iran has appointed Mohsen Rezaei as secretary of its Supreme National Security Council, promoting a prominent hardliner and close ally of Supreme Leader Ayatollah MojtabaKhamenei to the role more than five months into the conflict with the United States. Rezaei replaces Mohammad Baqer Zolqadr as second-in-command of the body that coordinates Iran's security and foreign policy and is chaired by President Masoud Pezeshkian. Zolqadr was appointed as political adviser to…