Evidence of Iran’s nuclear arms expertise mounts

Long denied access to foreign technology because of sanctions, Iran has nevertheless learned how to make virtually every bolt and switch in a nuclear weapon, according to assessments by U.N. nuclear officials in internal documents, as well as Western and Middle Eastern intelligence analysts and weapons experts.

Iran’s growing technical prowess has been highlighted by a secret memo, leaked to a British newspaper over the weekend, that purportedly shows Iranian scientists conducting tests on a neutron initiator, one of the final technical hurdles in making a nuclear warhead, weapons analysts said Monday. Washington Post