Britain’s intelligence services say that Iran has been secretly designing a nuclear warhead “since late 2004 or early 2005”, an assessment that suggests Tehran has embarked on the final steps towards acquiring nuclear weapons capability.
As world powers prepare to confront Iran on Thursday on its nuclear ambitions, the Financial Times has learnt that the UK now judges that Ayatollah Ali Khamenei, Iran’s supreme leader, ordered the resumption of the country’s weapons programme four years ago.
