ERBIL, Kurdistan Region of Iraq - US President Donald Trump on Sunday said negotiations with Iran are set to resume Monday, after he halted attacks on the country in a bid to restart talks for a possible deal that will end the months-long conflict.

“Now what we're doing is we're talking to them in the form of a negotiation. It begins tomorrow afternoon,” Trump told reporters aboard Air Force One, without providing the venue or who would participate in the talks.

He added that the negotiations would cover the Strait of Hormuz—a vital waterway south of Iran that Tehran has closed, through which roughly 20 percent of the world’s oil is transported—as well as Iran’s denuclearization.

The US-Israeli war on Iran began in late February, with Washington maintaining that the offensive was intended to eliminate Iran's nuclear capabilities and impose limits on its missile program.

In June, Iranian parliament speaker and chief negotiator Mohammad Bagher Ghalibaf said uranium enrichment is a national right and a "red line" for Iran, adding that it is non-negotiable.

Another key sticking point in the war has been the closure of the Strait of Hormuz which has sharply driven up global oil prices. For the US one of the main points in the memorandum of understanding reached between the warring sides on June 17 was the free navigation of the waterway.

The ceasefire fell through and hostilities resumed only 21 days later, with the US Central Command (CENTCOM) saying a Cyprus-flagged ship had been attacked by Iranian forces.

On Saturday, Trump said that the US and Israel have agreed to hold off new attacks on Iran, subject to all parties being able to “rapidly make a DEAL,” after being allegedly asked by Tehran and other regional countries to stop the strikes.

He warned that the US is “locked and loaded and ready to go against the Islamic Republic of Iran, at levels of Military Terror, Strength, and Power not seen since World War II.”

Iranian media has rejected the claim that Tehran asked Trump not to attack.