On Saturday, U.N. Secretary-General António Guterres traveled to Hiroshima to mark 77 years since the United States dropped the world’s first atomic bomb on the Japanese city. Guterres warned the risk of nuclear war is once again on the rise.

Secretary-General António Guterres: “We must keep the horrors of Hiroshima in view at all times, recognizing there is only one solution to the nuclear threat: not to have nuclear weapons at all.”