Abbas Araghchi's remarks come as US Secretary of State John Kerry and individuals from his atomic arranging group are being flame broiled in Congress two weeks into a 60-day audit of the arrangement in Washington.
A comparative procedure is under path in Iran's parliament, where a few MPs have contended that the assention has imperiled the nation's atomic project.
The arrangement in the middle of Iran and six world forces drove by the United States must be endorsed by Iran's top security board and parliament before it can be at last executed.
"We ought to declare our conclusion rapidly so if the Congress chose to dismiss the arrangement, the onus of such dismissal and disappointment of talks would fall on Congress," Araghchi said, not naming administrators but rather flagging the requirement for their support.
"All things considered we won't endure any misfortunes and we can come back to our ordinary system," he told Iranian state TV's political editors.
"At that point the world would say that Iran experienced its lawful process and affirmed the understanding yet the Congress wrecked the entire thing."
Kerry has said it is humiliating to him and a hit to American validity on the world stage if the Republican-drove Congress rejects the arrangement to put a nuclear bomb out of Iran's scope.
Iran has constantly denied looking for an atomic weapon.
President Barack Obama can veto Congress and keep the arrangement alive the length of US administrators don't get a 66% larger part vote.
Araghchi, successfully the number two arbitrator for Iran in the atomic talks behind Remote Clergyman Mohammad Javad Zarif, talked in front of President Hassan Rouhani's live broadcast discourse on Sunday night which is relied upon to concentrate on the atomic arrangement. (AFP)