'This way was chosen carefully and accurately,' Ali Larijani said in a live TV program broadcast on Saturday evening.
Although the Joint Comprehensive Plan of Action (JCPOA) has not led to solving all problems, it settled many of them, he said.
Countries like the US and Israel have vainly tried to violate the international agreement and go back on it, Larijani added.
He hoped the JCPOA signed between Iran and the six world powers- US, UK, Russia, France, China and Germany- will have a bright future.
During the program, Larijani also referred to the issue of exports saying focusing on it can improve the country's economic conditions.
Iran's next year's budget will prioritize the 'issue of exports', he added.
An increase in the economic and free trade zones will also lead to an improvement in exports, the parliament speaker said.