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..."Communication is a skill that you can learn. It's like riding a bicycle or typing. If you're willing to work at it, you can rapidly improve the quality of evry part of your life." Brian Tracy — Click here for more from Brian Tracy 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