Some say, also, Hugo Chavez, acquired this patent, this is about replicating the lithium 6 bomb, that the North Koreans also, already have. that's why, the deterministic "energetic" is used.

• Synthesis of an energetic nitrate ester 
  US 20120108838 A1
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• Interestingly, many of the nitrate esters used for military purposes are liquids, e.g., ethylene glycol dinitrate and propylene glycol dinitrate. Pentaerythritol tetranitrate (PETN) is one of the only solid nitrate esters, besides nitrocellulose, that is used in explosive applications. Unfortunately, the melting point of PETN is above 100° C., and thus PETN must be pressed as a solid for use in detonator applications. A more practical material would be a melt-castable explosive, which would allow the simplification of manufacturing processes.
• [0005]
  Herein is described the synthesis of an energetic nitrate ester that is a solid at ambient temperature, has a melting point range of 85-86° C., and has the highest density of any known nitrate ester composed of only carbon, hydrogen, nitrogen, and oxygen. The chemical, thermal, and sensitivity properties of this energetic nitrate ester are also described, as well as some preliminary explosive performance data.
SUMMARY OF INVENTION
• [0006]
  The present invention provides an energetic nitrate ester shown by the formula:
• [0000]