TEHRAN, August 1 (CGTN) -- Senior Iranian officials have rejected US President Donald Trump's offer of talks on Tuesday without preconditions as "a humiliation" after he acted to reimpose sanctions on Tehran following his withdrawal from a landmark nuclear deal.

"There has been no contact yet through official diplomatic channels for making the necessary coordination for such a visit," Iranian Foreign Ministry's spokesman Bahram Qasemi was quoted by the official news agency IRNA as saying.

Separately, Iranian President Hassan Rouhani said Trump’s repudiation of an international nuclear deal reached in 2015 was “illegal” and Iran would not easily yield to Washington’s renewed campaign to strangle Iran’s vital oil exports.

In May, Trump pulled the US out of the multilateral deal concluded before he took office, denouncing it as one-sided in Iran's favor.

He declared that he would be willing to meet Rouhani without preconditions to discuss how to improve relations during a press conference at White House.

“I believe in a meeting,” the president responded. “Speaking to other people, especially when you’re talking about potentials of war and death and famine and lots of other things, you meet. There’s nothing wrong in a meeting.”

While Iran sides thought "America is not trustworthy. "

US can't be trusted after it arrogantly and unilaterally withdrew from the nuclear agreement, Iran's Interior Minister Abdolreza Rahmani Fazli insisted.

A senior aide to Rouhani also said the only way back to talks was for Washington to return to the nuclear agreement.

Under the 2015 deal Iran agreed to curb its nuclear program in return for UN and Western sanctions to be lifted.