Cables from the whistleblowing site claim he was the "main negotiator" for the Viggen fighter aircraft deal.

BBC: Rajiv Gandhi

Mr. Agha said his cousin, Tayeb Agha, the main Taliban negotiator, has held talks with the U.S. in Germany and in a Gulf emirate other than Qatar.

WSJ: Detainee Deal Stalls Taliban Talks

They include the country's main nuclear negotiator, Saeed Jalili, former nuclear negotiator Hassan Rohani, former foreign minister Ali Akbar Velayati, and the mayor of Tehran, Mohammad Baqer Qalibaf.

BBC: Rafsanjani and Mashaei barred from Iran presidency poll