U.S. is working on A.I. (robot) controlled beam weapons for antimissile defense and other targets (think Space Force).
BTW these are “Autonomous” weapons, meaning the “Kill” decision is required too fast for human intervention ... like an incoming hypersonic missile at 15,000 MPH.
This in no secret. Pentagon is awarding contracts.
Asimov’s 3 Laws of Robotics have actually been looked at, or something similar ... but the ethics of all this is simply the necessities of national defense.
The bio-weapon aspects of COVID-19 are a reminder there are no depths to which the scum of the earth won’t sink. 33K I think you posted today ... they may need some more of the tricks up their sleeve.