BLUF

Workers at United States’ nuclear labs are continually stressing and testing parts to make sure these ageing warheads are safe.

Summary

KEY POINTS:
  • More than $750 billion will be spent over the next decade to revamp ageing nuclear defences.
  • Some systems and parts are more than 50 years old.
  • There are concerns about the integrity of plutonium cores in ageing warheads.

References