In reference to Treaty on the Non-Proliferation of nuclear weapons (NPT), consider the following statements.
- The Treaty entered into force in 1970.
- The Treaty establishes a safeguards system under the responsibility of the International Atomic Energy Agency (IAEA) to verify compliance with the Treaty.
- All nuclear-weapon States are part of this treaty.
- All UN members are the part of this treaty.
How many of the above statements is/are correct?