Has the U.S. abandoned American Robert Levinson in Iran?

Robert Levinson, a former FBI agent, has been missing in Iran since March 9, 2007 and is now the longest held hostage in U.S. history. Yahoo News chief investigative correspondent Michael Isikoff spoke with New York Times reporter Barry Meier, who has written a new book about Levinson's case, "Missing Man: The American Spy Who Vanished in Iran.”