Amir Hekmati cites `` force , threats , miserable prison conditions '' He says Tehran wants to exchange him for other prisoners . The US has been negotiating with Iran since the 1979 Islamic revolution in an effort to secure his release.
Amir Hekmati cites `` force , threats , miserable prison conditions '' He says Tehran wants to exchange him for other prisoners . He is a decorated Marine who served from 2001 to 2005 .