Although Israel has signed the CWC, it has not ratified the treaty and therefore is not officially bound by its tenets.  The country is believed to have a significant stockpile of chemical weapons, likely the most abundant in the Middle-East, according to the Russian Foreign Intelligence Service.  A 1983 CIA report stated that Israel, after "finding itself surrounded by front-line Arab states with budding CW capabilities, became increasingly conscious of its vulnerability to chemical attack ... undertook a program of chemical warfare preparations in both offensive and protective areas ... In late 1982, a probable CW nerve agent production facility and a storage facility were identified at the Dimona Sensitive Storage Area in the Negev Desert. Other CW agent production is believed to exist within a well-developed Israeli chemical industry." 
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Contrast, for example, Portland Cement—the key ingredient for concrete. Portland Cement is manufactured by mining limestone, crushing it, and then (critical!) heating it in a furnace to change its physical properites. The resulting “clinkers” are then ground down to about -325 mesh. The result is ever-so useful cement powder. So, in terms of a carbon footprint—the energy needed to produce the final useful product—Portland Cement, is a major concern of industry and governments alike. Cement production constitutes a major portion of all major green house gases production.