Bureau of International Security and Nonproliferation (ISN)

The Bureau of International Security and Nonproliferation (ISN) is a division of the U.S. State Department responsible for preventing the spread of weapons of mass destruction (WMD), such as nuclear, chemical, and biological weapons. It works to enhance global security through diplomacy, treaties, and cooperation with other countries. ISN promotes nonproliferation policies, helps strengthen international partnerships, and supports initiatives to secure and reduce WMD stockpiles. By focusing on these efforts, ISN aims to protect U.S. and global safety and maintain peace while addressing the challenges posed by dangerous weapons.