Nuclear Non-Proliferation Treaty. The Treaty on the Non-Proliferation of Nuclear Weapons, more commonly known as the Non-Proliferation Treaty (NPT), has made the world safer and more prosperous for over fifty years. The NPT, with its three pillars of nonproliferation, disarmament, and peaceful uses of nuclear energy, is the cornerstone of the.

Iran had previously agreed to forgo the development of nuclear weapons as a signatory to the Nuclear Nonproliferation Treaty, which has been in force since 1970. However, after the overthrow of.