US and Iranian negotiators have reached a tentative agreement to extend the ceasefire in the three-month-old war by 60 days and launch talks on Iran's nuclear programme, according to a US official familiar with the matter.Iran did not immediately confirm any deal, and the official noted that US President Donald Trump has yet to sign off on it.The emerging memorandum of understanding came as the fragile ceasefire in the war between the US and Iran appeared to be wavering.

US and Iranian negotiators have reached a tentative agreement to extend the ceasefire in the three-month-old war by 60 days and launch talks on Iran's nuclear programme, according to a US official familiar with the matter.Iran did not immediately confirm any deal, and the official noted that US President Donald Trump has yet to sign off on it.The emerging memorandum of understanding came as the fragile ceasefire in the war between the US and Iran appeared to be wavering.