However, both countries still appeared to differ on significant issues central to the conflict.A White House official said the meeting in the Situation Room lasted about two hours, but did not address whether Trump had made a decision.A senior Iranian source told Reuters an agreement was close but had not yet been approved.Trump also said Iran would have to end its chokehold on the Strait of Hormuz and dismantle its capacity to make a nuclear weapon — two conditions that Tehran has not agreed to.An agreement would represent a big step towards ending a war that has pushed the world towards an energy crisis, though the underlying dispute over Iran's nuclear program would only be thrashed out in talks over subsequent weeks.Following a ceasefire in early April, the two sides have remained at odds on issues including Iran's nuclear ambitions, Israel's war in Lebanon with the Iranian-backed Hezbollah militia, and Tehran's demands for the lifting of sanctions and the release of frozen assets.After weeks of mainly indirect talks, four sources familiar with the matter said on Thursday that the US and Iran had agreed on a memorandum of understanding that would halt the war and give negotiators 60 days to reach a final deal.However, both sides have said several times before that they believed an agreement was close, but none has been reached The position of Israel, which launched the war on Iran on 28 February alongside the US, is central to any deal, but its role in the agreement is unclear.Trump has not yet approved the deal, according to the sources