A. 1972
B. 1970
C. 1980
D. None of these
Submitted by: Chris Danial
Opened for signature in 1968, the Treaty entered into force in 1970. On 11 May 1995, the Treaty was extended indefinitely. A total of 191 States have joined the Treaty, including the five nuclear-weapon States.
Correct Answer: 1970 ✔
Last Updated: July 28, 2021