Iran has agreed to surrender its stockpile of highly enriched uranium as part of a “largely negotiated” deal to end the war, according to US sources.The deal includes an “apparent commitment” to giving up the uranium, but a concrete plan of how this would be done is expected to be established in further rounds of talks, two US officials told The New York Times.Iran’s nuclear programme has been a sticking point in negotiations since the US and Tehran agreed to a ceasefire in April, and agreeing to give up its uranium would represent a major concession from the Islamic Republic.However,...