(L-R) Liz O'Sullivan with the International Committee for Robot Arms Control (ICRAC), Mary Wareham, global coordinator of the Campaign to Stop Killer Robots, and Jody Williams, Nobel Peace Prize co-laureate and the founding coordinator of the International Campaign to Ban Landmines (ICBL) attend a press conference on the Campaign to Stop Killer Robots, at the UN headquarters in New York, Oct. 21, 2019. Mary Wareham on Monday urged the international community to stop developing lethal autonomous weapons systems, or killer robots. (Xinhua/Li Muzi)