The United States and Iran are to hold indirect meetings in Doha this week ahead of the formal signing of a deal aimed at ending the Middle East war, a diplomat told AFP on Monday.

"Separate preparatory meetings with each side will now take place in Doha this week, ahead of the official signing in Switzerland and the start of the technical talks," the diplomat said, speaking on condition of anonymity to discuss the sensitive arrangements.

Pakistan's prime minister announced that the United States and Iran had agreed to a "Peace Deal" that immediately halts all military operations, including in Lebanon, with a signing ceremony to take place in Geneva on June 19.

U.S. President Donald Trump said Sunday that a peace deal with Iran is "now complete," announcing the Strait of Hormuz is open and the United States will lift its naval blockade.

"The Deal with the Islamic Republic of Iran is now complete. Congratulations to all!," Trump said on his Truth Social network, shortly after mediator Pakistan said both sides had reached an agreement.

U.S. President Donald Trump said Sunday that a peace deal with Iran was still on track to be signed within hours, despite an Israeli strike on Beirut's southern suburbs that he said had delayed the plan.

U.S. President Donald Trump on Sunday criticized Israel for launching a new attack on Beirut's southern suburbs and urged all parties to show restraint in order to achieve a "peace deal."

Iran said on Sunday there was "no point" in peace talks with the United States, accusing it of failing to uphold its commitments and casting doubt on a deal that Donald Trump had insisted would be signed imminently.

A Qatari delegation arrived in Tehran on Sunday, Iranian media and a diplomat said, as part of the mediation process to end the war between Iran and the United States.

Iran's Fars news agency said on Sunday that Tehran has not made a final decision on signing the agreement under discussion with the United States to end the Middle East war.

U.S. President Donald Trump said that a deal with Iran to end the Middle East war could be signed Sunday, and that the strategic Strait of Hormuz would be "open to all" immediately after.

Iranian Foreign Minister Abbas Araghchi said that upon finalization, a draft deal with the United States would be signed "remotely", which could happen "in the coming days."