UN Secretary-General Antonio Guterres warned of the highest risk of nuclear war in decades, referencing the film "Oppenheimer" to highlight the gravity of the situation. He called for an end to nuclear saber-rattling and urged the US and Russia to resume negotiations on a successor to the New START nuclear arms reduction treaty. Tensions around nuclear-armed North Korea and Iran's uranium enrichment also contribute to the heightened risk. Guterres emphasized the need for progress on nuclear disarmament initiatives, including the Treaty on the Prohibition of Nuclear Weapons.