Is WW3 the reason for chemtrails

Back In 1970, former National Security advisor Zbigniew Brzezinski wrote in Between Two Ages, that:

'By the year 2018, technology will make available to the leaders of the major nations, a variety of techniques for conducting secret warfare, of which only a bare minimum of the security forces need be appraised. One nation may attack a competitor covertly by bacteriological means, thoroughly weakening the population (though with a minimum of fatalities) before taking over with its own armed forces. Alternatively, techniques of weather modification could be employed to produce prolonged periods of drought or storm..."

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