The deal is still pending approval by US Congress, which has until September 17 to vote on the deal. US President Barack Obama has threatened to veto any resolution rejecting the deal.
"They thought this deal — and it is not clear if it will be endorsed in Iran or in America — will open up Iran to their influence. We blocked this way and will definitely block it in the future. We won't allow American economic, political or cultural influence on Iran," Khamenei said at a meeting with members of the Islamic Radio and Television Union, as quoted by the Islamic Republic News Agency.