Mohsen Fakhrizadeh, Iran’s top nuclear scientist, has been assassinated near Tehran, the country’s capital. The attack, which took place on Friday, severely injured Mr Fakhrizdeh, who later died in hospital.  Iran’s defence ministry described the events in a statement released shortly after Mohsen Fakhrizdeh’s death: “Armed terrorists targeted a vehicle carrying Mohsen Fakhrizadeh, head of…