A/RES/56/24 9. Welcomes the positive outcome of the 2000 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons and the unequivocal undertaking by the nuclear-weapon States, in the Final Document of the Review Conference, to accomplish the total elimination of their nuclear arsenals leading to nuclear disarmament, to which all States parties are committed under article VI of the Treaty, 61 and the reaffirmation by the States parties that the total elimination of nuclear weapons is the only absolute guarantee against the use or threat of use of nuclear weapons, 62 and calls for the full and effective implementation of the steps set out in the Final Document; 10. Calls for the immediate commencement of negotiations in the Conference on Disarmament, on a non-discriminatory, multilateral and internationally and effectively verifiable treaty banning the production of fissile material for nuclear weapons or other nuclear explosive devices on the basis of the report of the Special Coordinator26 and the mandate contained therein; 11. Urges the Conference on Disarmament to agree on a programme of work which includes the immediate commencement of negotiations on such a treaty with a view to their conclusion within five years; 12. Calls for the conclusion of an international legal instrument or instruments on adequate security assurances to non-nuclear-weapon States; 13. Calls also for the early entry into force and strict observance of the Comprehensive Nuclear-Test-Ban Treaty;43 14. Expresses its regret that the Conference on Disarmament was unable to establish an ad hoc committee on nuclear disarmament at its 2001 session, as called for in General Assembly resolution 55/33 T; 15. Reiterates its call upon the Conference on Disarmament to establish, on a priority basis, an ad hoc committee to deal with nuclear disarmament early in 2002 and to commence negotiations on a phased programme of nuclear disarmament leading to the eventual elimination of nuclear weapons; 16. Calls for the convening of an international conference on nuclear disarmament in all its aspects at an early date to identify and deal with concrete measures of nuclear disarmament; 17. Requests the Secretary-General to submit to the General Assembly at its fifty-seventh session a report on the implementation of the present resolution; 18. Decides to include in the provisional agenda of its fifty-seventh session the item entitled “Nuclear disarmament”. 68th plenary meeting 29 November 2001 _______________ 61 2000 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons, Final Document, vol. I (NPT/CONF.2000/28 (Parts I and II)), part I, art. VI, para. 15:6. 62 Ibid., art. VII, para. 2. 30