The Convention on Certain Conventional Weapons, an international forum that focuses on lethal autonomous systems, is hosted twice a year at the United Nations in Geneva. When Branka Marijan attended in November 2017, she thought the five-day sessions — which dealt largely in hypotheticals, speculating on a world where warfare was fought with killer robots — would be business as usual. After all, this was technology some thought might never be developed, and likely never deployed. That year, she ...