UN Secretary-General António Guterres said the world is living through “the most dangerous nuclear moment since the end of the Cold War,” speaking at a UN General Assembly meeting marking the International Day for the Total Elimination of Nuclear Weapons.

Guterres said nuclear arsenals are being expanded and modernized and the rattling of nuclear sabers is growing louder, while the safeguards built over decades to contain these dangers are breaking down just when they are most needed.


He noted that the New START treaty between the United States and Russia expired earlier this year, leaving, for the first time in more than half a century, no binding limits on strategic nuclear arsenals. “The United States and the Russian Federation must negotiate a successor framework to New START,” Guterres said, warning that advances in technology are increasing the odds of mistake and miscalculation.