The Vatican's top diplomat urged world leaders Tuesday to put a pause on lethal autonomous weapons systems for long enough negotiate an agreement on them, joining a series of U.N. General Assembly speakers who have expressed concern about various aspects of artificial intelligence. “It is imperative to ensure adequate, meaningful and consistent human oversight of weapon systems,” Archbishop Paul Gallagher, the Holy See's foreign minister, said as the biggest annual gathering on the diplomatic calendar wound down. The Vatican also likes the idea of creating an internat...