What to Know About the Nuclear Treaty That Iran’s Threatening to Quit

Iran could be poised to withdraw from an international accord that seeks to prevent the spread of nuclear weapons. This follows tensions with the United Nations’ atomic watchdog, compounded by the attacks on the Islamic Republic’s nuclear program by Israel and the US.

Should Iran pull out of the Treaty on the Non-Proliferation of Nuclear Weapons, it would reduce the chances of a diplomatic solution to Tehran’s atomic ambitions and be a serious blow to global arms-control efforts.