Iran said it would remain committed to the deal without Washington if Tehran achieved its goals - namely being protected from sanctions against key sectors of its economy such as oil - in cooperation with other countries that have signed up to the agreement.
"We think that the fight against nuclear non-proliferation is important and this agreement means that nuclear non-proliferation is possible because Iran will not go all the way to [build] nuclear weapons", he added.
Washington's decision to withdraw from the deal and reimpose sanctions angered its European allies as well as China and Russian Federation.
Iran's foreign minister has has held talks in China as he began a diplomatic tour with the remaining signatories of a multinational nuclear deal following the recent United States withdrawal from the landmark 2015 pact.
Iran's Foreign minister Mohammad Javad Zarif arrived in Beijing today on the first leg of a whirlwind diplomatic tour planned to rescue the nuclear deal left on the brink of collapse after the U.S. pulled out.
China's foreign minister also said his country is Iran's main trade partner and the two sides should defend their legitimate interests against others.
Mohammad Javad Zarif and senior Chinese officials hailed the "strategic partnership" between their countries.
The U.S. decision reignited the danger of economic crisis for Iran, which is now at the center of Tehran's diplomatic efforts.
Meanwhile, European diplomats in Tehran fumed that Trump's decision to withdraw from the nuclear deal could undermine years of patient work to restore commercial and diplomatic ties with the Islamic Republic.
"We have had good relations with China before and since the deal", he said.
Before leaving, Zarif published a government statement on his Twitter page, slamming Trump's "extremist administration" for abandoning "an accord recognized as a victory of diplomacy by the global community".
"Iran's Military Budget is up more than 40 percent since the Obama negotiated Nuclear Deal was reached. just another indicator that it was all a big lie", he wrote. "They will never abandon the U.S. for us", said housewife Poormoslem at a protest rally against Trump on Friday.
Trump directed his administration to "immediately begin the process of re-imposing sanctions" related to the deal, a White House statement said.
Iran's foreign minister departed on a whirlwind diplomatic tour early Sunday as world leaders scramble to salvage something from the wreckage of a landmark nuclear deal in the wake of Washington's withdrawal.