1 July 1968 Posted on June 30, 2013 by Staff The Nuclear non-proliferation treaty is signed in Washington, London and Moscow by 62 countries. Famous Words of Inspiration..."I have gained this from philosophy: that I do without being commanded what others do only from fear of the law." Aristotle — Click here for more from Aristotle Related posts: 5 March 1970 8 October 1968 14 October 1968 21 January 1968 21 March 1968 4 April 1968 30 June 1968 26 April 1986 16 July 1945 1 July 2000