Back to the implications of the Ukraine drone attack: Imagine the Chinese are poised to invade Taiwan. We move our vaunted carrier battle groups to the South China Sea. Suddenly, tens of thousands of drones that are sitting offshore in container ships and/or transported into the US suddenly strike our electrical grids, military installations, the Houston fuel reserves, nuclear plants, etc, across the US, plunging the country into utter chaos. Plus, our entire commercial internet is jammed and shut down. Then the Chinese say that they have tens of thousands more drones poised to strike cities. Are we really going to fight for Taiwan?
I don't expect this to happen. Unlike the Russians, the Chinese are smart enough to know you can achieve more power through business than through military action. However, as someone who lived in Manhattan during 911 (that was fun), I have no problem imagining some Islamic terrorist group executing this campaign.