Guterres warns humanity on 'knife's edge' as AI raises nuclear war threat

The UN secretary general, Antà³nio Guterres, has warned that the spread of artificial intelligence technology multiplies the threat of nuclear war, and that humanity is now "on a knife's edge" as dangers to its existence coalesce. Guterres's warning is due to be shown on a recorded video to be played on Friday morning at the annual meeting of the US Arms Control Association (ACA) in Washington. In the video, the secretary general makes his most impassioned plea to date for the nuclear weapons states to take their non-proliferation obligations seriously, and in particular, agree on a mutual pledge not to…