Iran tested advanced nuclear warhead design ? secret report. The very existence of the technology, known as a "two-point implosion" device, is officially secret in both the US and Britain. There are fears in Washington and London that if no deal is reached to at least temporarily defuse tensions by the end of December, Israel could set in motion plans to take military action aimed at setting back the Iranian programme by force, with incalculable consequences for the Middle East.Descriptions of "two-point implosion" warheads designs have occasionally appeared in the public domain (there are extensive descriptions on Wikipedia) and they were first developed by US scientists in the 1950s, but it remains an offence for American officials or even non-governmental nuclear experts with security clearance to discuss them.
