"We are committed to our obligations and we are going to fulfill all our responsibilities; however, if there are any signs of infringement of the deal, Iran will consider its own options," Kamalvandi on Friday.
He underlined that the nuclear deal has secured Iran's interests and the United States should respect its pertinent obligations.
Kamalvandi reiterated that Iran would keep its right to strike back if the United States is not going to suspend the sanctions against Iran.
The landmark nuclear agreement, known as the Joint Comprehensive Plan of Action (JCPOA), is a multilateral document which was achieved in July 2015 after months of diplomatic efforts and approved by the UN Security Council.
The deal resulted in the removal of international and western financial and economic sanctions against Iran and imposed more restrictions on its controversial nuclear program.
"For instance, if by January 14 next year, they are not going to suspend the (new) sanctions (against Iran), it means that they have exited the deal. So, naturally, it is our right to do whatever is needed and to retaliate," Kamalvandi added.
US President Donald Trump said in October that the United States could not formally certify Iran's compliance with the nuclear accord. The US Congress is expected to decide whether to continue suspending the sanctions against Iran.