On Saturday, the White House reportedly gave Swiss authorities a phone number which Iranian leaders can use to reach President Donald Trump, who earlier urged Tehran to call him amid deteriorating ties between the US and Iran.

Iranian Deputy Foreign Minister Abbas Araghchi has played down the importance of Washington allegedly sharing a phone number for Tehran to get in touch with US President Donald Trump.

“In order to exit the difficult situation that Trump has created for himself and the US, there is no need for mediation and phone number. Washington has to revise its policy and behaviour”, Araghchi told the Iranian YLC news outlet.

READ MORE: Pompeo Says Iran is 'Major Destabilizing Influence' the US 'Aims to Fix'

When asked about what the Iranian Foreign Ministry will do with Trump's alleged phone number, Araghchi said that “if required, they have our number”.

Separately, he said the international community admits the White House’s “wrong policies” and its “mistake” to pull out of the Iran nuclear deal and intensify pressure on Iran.

Araghchi spoke after CNN cited an unnamed diplomatic source as saying on Saturday that the White House provided authorities from Switzerland with a phone number to reach President Trump.

The Swiss embassy in Tehran represents US interests in the Islamic Republic as the two countries severed relations after the 1980 Iran revolution.

READ MORE: Deputy Revolutionary Guard Chief Says Iran Will Not Hold Talks With US — Reports

Earlier, Trump urged Iranian leaders to phone him up to discuss matters related to possible negotiations between the two sides aimed at resolving the ongoing bilateral tensions.

“What I would like to see with Iran, I would like to see them call me. If they do, we are open to talk to them”, Trump told reporters at the White House on Thursday.

Yadollah Javani, deputy commander of Iran's Revolutionary Guard Corps (IRGC) said in turn that Iran had no plans to talk to the US which he claimed is an “unreliable” negotiating partner.

Javani was echoed by Iranian Foreign Ministry spokesman Bahram Qassemi who flatly rejected Trump's claims that Tehran had sought talks with Washington, saying that the US president was only voicing to his "false and unattainable dreams".

READ MORE: Iran Reminds of US Lies Before Iraq War, Hints US Official Behind Scaremongering

The developments come amid increasing tensions between Iran and the US which escalated on Wednesday, when Tehran announced that it would backtrack on some of its "voluntary" commitments under the Joint Comprehensive Plan of Action (JCPOA), also known as the 2015 Iran nuclear deal.

This was followed by Washington announcing a new round of anti-Iranian sanctions aimed at the Islamic Republic’s iron, steel, aluminium, and copper sectors.

On 8 May 2018, Trump announced Washington’s withdrawal from the JCPOA, reinstating tight anti-Iranian sanctions and secondary restrictive measures against foreign companies doing business with Tehran.