Iran deal promises end to war but how it will work remains unclear

World leaders welcomed news of a U.S.-Iran ceasefire deal as negotiators work through key issues before Friday's signing.

The US president celebrated having solved a problem he had created: reopening a vital waterway through which more than a fifth of the world’s oil supply passed each day – before Iran effectively closed it at the start of the war, increasing energy prices and disrupting the global economy.

The progress over a US-Iran peace deal finally seems to be materialising after much back and forth as the two sides virtually signed a Memorandum of Understanding (MoU) on Monday.

President Trump faces pushback from his own supporters to reveal details of the agreement with Iran.