Iran Taps Longtime I.R.G.C. Commander Mohsen Rezaei to Top Security Post

The appointment of Mohsen Rezaei as secretary of the Supreme National Security Council suggests that Iran’s old guard is consolidating power.Mohsen Rezaei, an adviser to Iran’s supreme leader, Ayatollah Mojtaba Khamenei, attending a funeral ceremony for Mr. Khamenei’s father and predecessor, in Tehran last month.