The United States is alleged to have caused the Russian heatwave and drought with a secret weapon!
This is preposterous and here is why: If you go to pages 34 and 35 of Warnings, you learn (in the only "calculation" in the entire book) that a single supercell thunderstorm releases the equivalent energy of a nuclear bomb with several megatons of force every minute. This is why the damage from an F5 tornado looks like a nuclear bomb -- the amount of destructive energy is about the same.
Even if this sort of weapon could be built (and it cannot, we don't know how to move the jet stream), we have no way of harnessing several megatons of energy per minute or more that would be needed to divert the jet steam.
The dust bowl of the 1930's in the United States was an unfortunate act of nature as was the recent extreme weather in Russia.