The Majlis speaker expressed strong support for the historic deal clinched with major powers over Iran's nuclear work.
Describing the accord as an "achievement", Ali Larijani told ISNA on Saturday, "The establishment made right decisions on the nuclear agreement."
About 20 months of talks between Iran and the P5+1 (the five permanent members of the United Nations Security Council plus Germany) led to an accord on July 14 in Vienna to settle a 12-year dispute over Tehran's nuclear program.
Pointing to unfulfilled expectations of the western side to negotiations, Larijani said, "The other side intended to deprive Iran of its nuclear knowhow. They insisted in (UN) resolutions and during political negotiations that Iran's enrichment capacity should be destroyed."
Iran, on the other hand, was seeking to have its right to nuclear enrichment recognized and eliminate difficulties created as a result of the sanctions imposed over its nuclear program, the senior lawmaker said.
"Through negotiations, Tehran was able to achieve both aims."
The pact (formally referred to as the Joint Comprehensive Plan of Action) will end sanctions against Tehran in return for Iran agreeing to temporary constraints on its nuclear program.
Under the resolution adopted by the UN on July 20 as part of the JCPOA to endorse it and terminate the Security Council's previous sanctions resolutions, Iran has managed to establish its right to continued enrichment activities, he said, adding, "This is considered an achievement, both politically and legally."
The other gain from the pact was "the removal of economic sanctions, which has been stipulated in both the deal and the UN resolution," he added.