Former top American security and defense officials have launched a new appeal to free a former U.S. Marine imprisoned in Iran.
Amir Hekmati has been detained by Tehran since August 2011 on espionage charges, which Washington says are false.
In a letter to U.S. President Barack Obama
, the ex-officials urge "immediate action" to speed up Hekmati's release.
The letter is signed by William S. Cohen, a former secretary of defense; General Peter Pace, a former chairman of the Joint Chiefs of Staff; General James L. Jones, a former national security adviser; and General Joseph W. Ralston, a former allied commander in Europe.
They say Hekmati has "conducted his life with unyielding honor and courage."
The officials say now is a good time to press for his release, as Western powers and Iran attempt to move forward on their interim nuclear agreement.
Based on reporting by "The New York Times"