With reference to the Non-Proliferation Treaty (NPT), consider the following statements:
- The Treaty defines nuclear weapon states (NWS) as those that had manufactured and detonated a nuclear explosive device prior to 1 January 1967.
- The treaty is reviewed every six years in meetings called Review Conferences of the Parties to the Treaty of Non-Proliferation of Nuclear Weapons.
Choose the correct answer from the codes given below:
Both 1 and 2
Neither 1 nor 2