The US Department of Energy's National Nuclear Security Administration (NNSA) has said the programme, which was completed once this final bomb had been dismantled, is a year ahead of schedule.

The National Security Agency in us is accused of reading other people's e-mails around the world in its search for military and commercial secrets.

So we've committed ourselves to a sustained, effective program of international cooperation on national [sic] security, and we call on other nations to join us.