As warheads proliferate, decades old nuclear weapons treaty must evolve, warns UN chief For the first time in decades, the number of nuclear warheads is on the rise. Nuclear testing is back on the table and global military spending jumped to $2.7 trillion in 2025 . Addressing the General Assembly, António Guterres said the cornerstone of efforts to eliminate nuclear weapons has been eroding, with commitments unfulfilled and trust and credibility wearing thin. “ We need to breathe life into the Treaty once more ,” he declared. Today’s nuclear threat is compounded by new dangers from rapidly evolving technologies such as artificial intelligence and quantum computing, he added. Reflecting concerns about the growing use of AI in military conflicts, Mr. Guterres reiterated the UN view that until nuclear weapons are eliminated, humanity must never cede control over them.…