Four Americans being detained in Iran could possibly be the beneficiaries of last week’s historic nuclear negotiations and deal.

“We believe the deal represents just the beginning,” said David Levinson, son of former FBI agent Robert Levinson, held in Iran since 2007.

“Now, we feel my father can now be a priority of conversation,” said the younger Levinson in an exclusive interview with WTOP NSC JJ Green.

Click above to listen to the interview.