{
 "note": "Per-material transparency of strategic reserves. The honest axis is not \"who holds a buffer\" (the US NDS and China SRB both hold materials) but \"whose buffer is quantified in the open\" — only Japan (JOGMEC) publishes per-material days of cover. Curated + web-verified.",
 "regimes": [
  {
   "who": "United States (National Defense Stockpile / DLA)",
   "fact": "DLA Strategic Materials holds ~28 commodities (incl. cobalt, tungsten, tantalum, titanium sponge, beryllium, germanium); the inventory is ~$1.0-1.4bn vs a ~$14.8-15.5bn identified shortfall — small in dollar terms, and per-material days of cover are not published.",
   "verdict": "Holds materials, but small relative to identified need and not published on a days-of-cover basis."
  },
  {
   "who": "Japan (JOGMEC)",
   "fact": "Stockpiles 7 rare metals (incl. cobalt, tungsten, manganese, vanadium, nickel) at ~60 days of consumption; target up to 180 days for high-risk.",
   "verdict": "The model — the only country publishing per-material days of cover."
  },
  {
   "who": "South Korea (KORES / MOTIE)",
   "fact": "Holds a rare-metals reserve and publishes coverage TARGETS (e.g. days-of-cover goals), though per-material current levels are less granular than JOGMEC.",
   "verdict": "A second allied programme with public targets — so \"only Japan\" is about published per-material cover specifically."
  },
  {
   "who": "China (State Reserve Bureau)",
   "fact": "Holds rare earths, cobalt and others — levels undisclosed.",
   "verdict": "Real but opaque: an information asymmetry as much as a material one."
  },
  {
   "who": "European Union",
   "fact": "A strategic reserve is proposed under the Critical Raw Materials Act.",
   "verdict": "Not yet built."
  }
 ],
 "n_materials": 32,
 "n_with_published_cover": 5,
 "materials": [
  {
   "label": "magnets",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "magnesium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "germanium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "graphite",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "gallium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "tungsten",
   "buffer": "quantified",
   "note": "Japan (JOGMEC): ~60-day cover, target up to 180 — the only PUBLISHED per-material days of cover"
  },
  {
   "label": "cobalt",
   "buffer": "quantified",
   "note": "Japan (JOGMEC): ~60-day cover, target up to 180 — the only PUBLISHED per-material days of cover"
  },
  {
   "label": "niobium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "boron",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "lithium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "antimony",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "platinum",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "palladium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "fluorspar",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "titanium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "silicon",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "feldspar",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "vanadium",
   "buffer": "quantified",
   "note": "Japan (JOGMEC): ~60-day cover, target up to 180 — the only PUBLISHED per-material days of cover"
  },
  {
   "label": "manganese",
   "buffer": "quantified",
   "note": "Japan (JOGMEC): ~60-day cover, target up to 180 — the only PUBLISHED per-material days of cover"
  },
  {
   "label": "bauxite",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "phosphate",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "baryte",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "arsenic",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "beryllium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "hafnium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "strontium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "phosphorus",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "tantalum",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "cokingcoal",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "helium",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "copper",
   "buffer": "unquantified",
   "note": "No published days-of-cover (US NDS may hold it undisclosed; China SRB secret; EU not built)"
  },
  {
   "label": "nickel",
   "buffer": "quantified",
   "note": "Japan (JOGMEC): ~60-day cover, target up to 180 — the only PUBLISHED per-material days of cover"
  }
 ]
}