“[C]ollaboration between... divergent systems is possible... only as long as both are stable. ...International security is ...based upon the internal political and social security of each of the Great Powers.”

Source: Understanding International Conflicts: An Introduction to Theory and History (6th ed., 2006), Chapter 2, Origins of the Great Twentieth Century Conflicts, p. 34.

2000s, 2002, State of the Union address (January 2002)

Address to the United Nations Atomic Energy Commission (14 June 1946)
Context: Peace is never long preserved by weight of metal or by an armament race. Peace can be made tranquil and secure only by understanding and agreement fortified by sanctions. We must embrace international cooperation or international disintegration. Science has taught us how to put the atom to work. But to make it work for good instead of for evil lies in the domain dealing with the principles of human dignity. We are now facing a problem more of ethics than of physics.

On Behalf of the Movement of Nonaligned Countries (1979)

Source: The Social Construction of Reality, 1966, p. 129-147

To Herbert Kappler, October 11. Quoted in "The Battle for Rome" - Page 77 - by Robert Katz - History - 2003

"Computer Recreations: Of Worms, Viruses and Core War" by A. K. Dewdney in Scientific American, March 1989, pp 110.
Context: The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.

Kenneth Boulding (1975), International Systems: Peace, Conflict Resolution, and Politics. p. 375 as cited in: Bjørn Møller, Håkan Wiberg (1994) Non-offensive defence for the twenty-first century. p. 36
1970s