TEHRAN, Young Journalists Club (YJC) - He made the remarks at a presser after his speech at the 72nd UN General Assembly in New York.
Iranian president continued that there could be no negotiations with US in future as Washington is talking of withdrawing from Iran’s 2015 nuclear deal with P5+1 countries.
"We have had talks for several years on [the nuclear] deal..., but now the Americans speak of quitting the deal. So why should dialogues on other matters be held [with the US]?" Rouhani told reporters on Wednesday night.
Rouhani said that considering current situation, negotiations with Washington "would be wasting time."
He also said that Iran had "different options" such as "the removal of obstacles" if Washington withdrawals from the nuclear deal, officially known as the Joint Comprehensive Plan of Action (JCPOA).
"It means that our hand would be completely open to take any action that we see as beneficial to our country," he added.
Rouhani also said that US President Donald Trump should "apologize to the Iranian nation" for his UN speech, which he said was a violation of the JCPOA.
During his speech at the UN General Assembly on Tuesday, Trump accused Iran of engaging in “destabilizing activities” in the region.
He also claimed that Iran's "support for terror is in stark contrast to the recent commitments of many of its neighbors to fight terrorism and halt its financing.”
Trump also denounced the nuclear agreement as “an embarrassment” that Washington may abandon.
Iran and the five permanent members of the UN Security Council – the United States, France, Britain, Russia and China – plus Germany signed the nuclear agreement on July 14, 2015 and started implementing it on January 16, 2016.
Backed by UN Security Council Resolution 2231, the JCPOA is an international agreement, which makes it impossible for any party to the deal to withdraw from it.
Since Trump took office, the US has repeatedly threatened to abandon the agreement.
"We don't think Trump will walk out of the deal despite (his) rhetoric and propaganda," added Rouhani. "Either the nuclear deal remains as it is or it will collapse," he added.