4. Calls upon the Russian Federation and the United States of America to formalize their presidential nuclear initiatives into legal instruments and to initiate negotiations on further reductions of such weapons;
4. 吁请俄罗斯联邦和美利坚合众国将总统核倡议正式定为法律文书，并就进一步裁减此类武器问题开始进行谈判；