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Family of Robert Levinson "disappointed" in the U.S, calls for action in release

Robert Levinson not part of Iran, U.S. prisoner swap

Captured ex-FBI agent Robert Levinson pleads for help

Robert Levinson's wife admits he was working for CIA

Bob Levinson's Family Releases Statement Saying He Has Died

Family of Bob Levinson, hostage believed to be in Iran, hopes for breakthrough

Robert Levinson went missing March 9, 2007

Levinson family feels "betrayed and devastated" after U.S.-Iran prisoner swap

Robert Levinson Missing in Iran, State Department Weighs In

Ex-FBI Agent Bob Levinson Pleads for Help in Video

Iran Acknowledges For 1st Time Open Case Into Disappearance Former FBI Agent Bob Levinson

Robert Levinson Family In Court For Lawsuit Against Iran

Robert Levinson worked for CIA in Iran, wife says

Is Robert Levinson Still Alive After Vanishing in Iran?

Pictures Released of Captured Former FBI Agent Bob Levinson Possibly in Iran

Clinton Updates on Robert Levinson and Alan Gross

Last man to see Levinson disputes Iran's account

Family hopeful Trump can bring Bob Levinson home from Iran

Excl intv with wife of Robert Levinson, fmr FBI agent who went missing in March

11 Years Later, Family Of Missing Robert Levinson Not Giving Up Hope