How long has the man been missing?

(25) The wife of a retired FBI agent who disappeared in Iran nearly five years ago said Friday that the family received a video of her husband being held hostage "a little more than a year ago" and has only now released it publicly in an attempt to prompt his release. The video features nearly a minute of Robert lievinson, appearing weak and pleading for help. (26) His family has posted the video on its website, along with two minutes of video of his wife, Christine, and his son, David, asking his captors for guidance on how they can help bring about his release. She said the family had tried to communicate with the captors when they received the video. In March, a U. S. government official and a senior diplomatic official said the United States had received proof that Levinson was alive.