Calls upan all States, and in particular upon the States at present possessi;:ig nuclear weapons, to use their best endeavours to secure the conclusion of an international agreement containing provisions under which the nuclear States would undertake to refrain from relinquishing control of nuclear weapons and from transmitting the information necessary for their manufacture to States not possessing such weapons, and provisions under whi.ch States not possessing nuclear weapons would undertake not to manufacture or otherwise acquire control of such weapons;
