The United States and Iran have reached ⁠an agreement to extend ​a ceasefire, allow shipping through the Strait of Hormuz and lift a US blockade and some sanctions on Iran, sources told Reuters, but the deal has not been finalised. 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 programme would only be thrashed out in talks over subsequent weeks.