WASHINGTON: USinfo-icon President Donald Trumpinfo-icon said on Monday he would be willing to meet Iraninfo-icon's leader without preconditions to discuss how to improve ties after he pulled the United Statesinfo-icon out of the 2015 nuclear deal, saying: "If they want to meet, we'll meet."

Asked at a White House news conference whether he was willing to meet Iranian President Hassan Rouhani, Trump said: "I'd meet with anybody. I believe in meetings," especially in cases where warinfo-icon is at stake.

Trump's remarks represented a marked softening in rhetoric from a week ago, when he lashed out at President Rouhani in a tweet, saying: "Never, ever threaten the United States again or you will suffer consequences the likes of which few throughout historyinfo-icon have ever suffered before."

Shortly before that July 22 tweet, Rouhani had addressed Trump in a speech, saying that hostile US policies could lead to "the mother of all wars".

On Monday, speaking at a news conference with visiting Italian prime minister Giuseppe Conte, Trump said: "I would certainly meet with Iran if they wanted to meet. I don't know that they're ready yet. I ended the Iran deal. It was a ridiculous deal. I do believe that they will probably end up wanting to meet and I'm ready to meet any time that they want to."

Trump said he had "no preconditions" for a meeting with the Iranians, adding: "If they want to meet, I'll meet."

"If we could work something out that's meaningful, not the waste of paper that the other deal was, I would certainly be willing to meet," he added, noting that it would be good for the United States, Iran and the worldinfo-icon.

Hours before Trump's statement, Tehraninfo-icon had ruled out talks with Washington.

"With current Americainfo-icon and these policies, there will definitely not be the possibility of dialogue and engagement, and the United States has shown that it is totally unreliable," foreign ministry spokesman Bahram Qasemi told a weekly news conference on Monday.

Qasemi criticised the US withdrawal from the nuclear deal and economic sanctions that follow, noting "there are no conditions for such a discussion at all".

In May, Trump withdrew the United States from the landmark 2015 international agreement designed to deny Tehran the ability to build nuclear weaponsinfo-icon.

Since then, Iran and other signatories have been working to find a way to salvage the agreement, even as the United States has begun reimposing some sanctions on Iran.

World powers and Iran have been working on an economic package to compensate for US sanctions that begin taking effect next month.