U.S. Secretary of State John Kerry marked the eighth year since the disappearance in Iran of Jewish-American Robert Levinson with a plea for his safe return. Kerry in a statement issued Monday called on the government of Iran to “work cooperatively with us on the investigation into his disappearance so we can ensure his safe return.” Levinson, 67, of Coral Springs, Florida, disappeared from Kish Island. The statement said Levinson is one of the longest-held American citizens in history and that he has “spent more than 2,900 days separated from those who love him.” -excerpt- The FBI announced that it...