The Non-Proliferation Treaty (NPT), officially the Treaty on the Non-Proliferation of Nuclear Weapons is an international agreement with the objective of thwarting the spread or proliferation of nuclear weapons and related technology. It aims to encourage and support collaboration in the peaceful uses of nuclear energy, and to propel towards accomplishing nuclear disarmament, as well as complete and general disarmament. The treaty was out for signature on 1st July 1968 and came into force two years later in March 1970. The NPT was extended indefinitely on May 11th, 1995. The treaty is significant because more nations have accepted this treaty than any other disarmament treaty. The four member states of the United Nations that have not accepted NPT are India, Pakistan, Israel and South Sudan. North Korea withdrew from the NPT in 2003. Currently, there are 190 parties to the agreement. There has been criticism to the treat by the developing countries especially that this is a ‘conspiracy’ to keep the ‘have-nots’ from acquiring nuclear weaponry. The agreement stipulates the nuclear powers to liquidate their nuclear weapons but this has not happened.