Iran is reportedly reviewing a fresh U.S. proposal to end their more than two-month old war, even as President Donald Trump has maintained a threat to once again launch attacks should a deal fail to materialize.

Washington and Tehran have been working with mediators on a one-page, 14-point framework to once again restart talks over a lasting peace deal, media reports have said.

The discussions are anticipated to kick off next week in Pakistan, according to the Wall Street Journal. The paper added that a monthlong process would then look to resolve disputes over Iran’s nuclear ambitions and relief from sanctions, although key disagreements remain over areas like nuclear enrichment and inspections.

Trump suggested in remarks at the White House on Wednesday afternoon that the U.S. had “won” the war and that talks with Tehran had been “very good” over the last 24 hours.

Earlier in the day, Trump said in a social media post that the U.S. operation against Iran, which it launched jointly with Israel in late February, would be over if Tehran “agrees to give what has been agreed to,” although he did not elaborate further. He also threatened to carry out attacks “at a much higher level and intensity than it was before” should an accord not be reached.

Iran, meanwhile, has provided mixed messaging. The country’s foreign minister has claimed that Iranian officials would convey their opinion on the U.S. proposal to Pakistan, a frequent mediator between Washington and Tehran. But other media reports cited an Iranian official who described the U.S. peace plan as an American wish list.

According to CNN, Iran is anticipated to give mediators their response by Thursday.

International stock markets climbed on Thursday, following a buoyant session on Wall Street in which the benchmark S&P 500 and tech-heavy Nasdaq Composite clocked new record highs.

Hopes have also swirled around a potential reopening of the Strait of Hormuz, a vital waterway off Iran’s southern coast through which a fifth of the world’s oil transits. Brent crude futures, the oil benchmark, were hovering around $100 a barrel, down sharply from recent heights but still well above pre-war levels.

Trump wrote on social media that the strait would be “OPEN TO ALL” if a peace deal is made. However, uncertainty has continued to revolve around the fate of shipping through the chokepoint, especially as both the U.S. and Iran keep blockades of the conduit in place.

U.S. forces moved to disable an Iranian-flagged oil tanker attempting to breach the American blockade of Iran’s ports on Wednesday morning, according to U.S. Central Command. Centcom added that U.S. forces fired several rounds at the ship’s rudder as it sailed toward a port on the Gulf of Oman.