Your first guess was correct. "...autonomous weapons have been described as the third revolution in warfare, after gunpowder and nuclear arms." (https://futureo

Your first guess was correct. "...autonomous weapons have been described as the third revolution in warfare, after gunpowder and nuclear arms." (https://futureoflife.org/open-letter-autonomous-weapons https://futureoflife.org/open-letter-autonomous-weapons)