When wildfires swept across Maui last month with destructive fury, China’s increasingly resourceful information warriors pounced. The disaster was not natural, they said in a flurry of false posts that spread across the internet, but was the result of a secret “weather weapon” being tested by the United States. To bolster the plausibility, the posts carried photographs that appeared to have been generated by artificial intelligence programs, making them among the first to use these new tools to bolster the aura of authenticity of a disinformation campaign. For China —…