UN General Assembly
1962

87. As is plain from the draft treaties tabled at Geneva, the United States Government is prepared to stop the testing of all nuclear weapons, provided only, that others are prepared to assume the obligation to do the same. Testing in the atmosphere, in the oceans and in space causes radiation. Testing underground does not. We are prepared to stop testing even without any international verification in the atmosphere, in the oceans and in space, because we have national means of detecting testing by others. And we are prepared to stop testing underground —where we do not have our own means of verification-provided an international system is created to assure that others Are doing the same.