is based on the US W76-1 warhead and believed to have a similar explosive ... where the security doctrines of each country are willing to countenance a .... ...

W76-Mk4/Mk4A or W88-Mk5 reentry bodies. The missile is launched by ... To address aging and obsolescence issues, the Trident II SWS' life was .... plutonium pits in the current W76 warheads will last a minimum of a century.

... Ultimately, the RRW program may address a more fundamental concern .... ...

W76, or Holbrook warheads, as they are known. “Very significant implications.” The British government has insisted on its country's nuclear .... Assembly of the new warhead, which is based on the existing W76 warhead, has started at the Pantex Plant in Tennessee, according to reports ....